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  • 02:36 Sesame Street: Chaka Khan Sings about Faces with Elmo and Telly

    Sesame Street: Chaka Khan Sings about Faces with Elmo and Telly

    89 views / 0 likes - added

    Your face is unique! Sing along as Chaka Khan sings about all the wonderful things your face can do like help you share emotions! -- Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=SesameStreet For more fun

  • 02:33 The Man Behind Khanacademy - Salman Amin Khan

    The Man Behind Khanacademy - Salman Amin Khan

    314 views / 0 likes - added

    The story of Salman Amin Khan. The faculty of Khanacademy!

  • 08:26 Conjugate acid-base pairs | Acids and bases | Chemistry | Khan Academy

    Conjugate acid-base pairs | Acids and bases | Chemistry | Khan Academy

    213 views / 0 likes - added

    Introduction to conjugate acid-base pairs. Definition and examples of conjugate acid-base pairs. Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivit

  • 07:57 Le Chatelier's principle: Worked example | Chemical equilibrium | Chemistry | Khan Academy

    Le Chatelier's principle: Worked example | Chemical equilibrium | Chemistry | Khan Academy

    248 views / 0 likes - added

    A worked example using Le Chatelier's principle to predict how concentrations will shift for different perturbations. Example includes changes in reaction vessel volume, changing amount of solid product, adding inert gas, and adding a catalyst. Chemistry

  • 07:37 Introduction to reaction quotient Qc | Chemical equilibrium | Chemistry | Khan Academy

    Introduction to reaction quotient Qc | Chemical equilibrium | Chemistry | Khan Academy

    169 views / 0 likes - added

    Introduction to the reaction quotient Qc, and how to use the reaction quotient to predict how the reaction concentrations will change. Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its

  • 11:47 Bond enthalpy and enthalpy of reaction | Chemistry | Khan Academy

    Bond enthalpy and enthalpy of reaction | Chemistry | Khan Academy

    205 views / 0 likes - added

    Introduction to bond enthalpy, and how to use bond enthalpies to calculate enthalpy of reaction. Watch the next lesson: https://www.khanacademy.org/science/chemistry/thermodynamics-chemistry/enthalpy-chemistry-sal/v/2015-ap-chemistry-free-response-7?utm_s

  • 07:14 Calculating internal energy and work example | Chemistry | Khan Academy

    Calculating internal energy and work example | Chemistry | Khan Academy

    214 views / 0 likes - added

    Worked example calculating the change in internal energy for a gas using the first law of thermodynamics. Watch the next lesson: https://www.khanacademy.org/science/chemistry/thermodynamics-chemistry/internal-energy-sal/v/specific-heat-and-latent-leat-of-

  • 05:53 Comparing Q vs K example | Chemical equilibrium | Chemistry | Khan Academy

    Comparing Q vs K example | Chemical equilibrium | Chemistry | Khan Academy

    188 views / 0 likes - added

    A worked example using reaction quotient Q to predict how concentrations will shift so the reaction can get to equilibrium. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acids-and-bases-topic/acids-and-bases/v/arrhenius-definition-o

  • 07:33 Ways to get a buffer solution | Chemistry | Khan Academy

    Ways to get a buffer solution | Chemistry | Khan Academy

    173 views / 0 likes - added

    Describes the two main situations where you get a buffer: making a buffer for a specific pH by combining a weak acid and a salt containing the conjugate base, and using a neutralization reaction by combining a weak acid and a strong base. Watch the next l

  • 06:13 Rate constant k from half-life example | Knetics | Chemistry | Khan Academy

    Rate constant k from half-life example | Knetics | Chemistry | Khan Academy

    169 views / 0 likes - added

    Example problem showing how to find the rate constant k from the half-life of a first order reaction. Watch the next lesson: https://www.khanacademy.org/science/chemistry/chem-kinetics/copy-of-kinetics/v/second-order-reaction-with-calculus?utm_source=YT&u

  • 07:50 pH and pKa relationship for buffers | Chemistry | Khan Academy

    pH and pKa relationship for buffers | Chemistry | Khan Academy

    385 views / 0 likes - added

    How the Henderson-Hasselbalch equation can be used to look at the ratio of conjugate acid and base using relationship between buffer pH and pKa. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/

  • 06:47 Noble gas configuration

    Noble gas configuration

    184 views / 0 likes - added

    How to write electron configurations for atoms and monatomic ions using noble gas configuration Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity

  • 07:45 Introduction to chemistry

    Introduction to chemistry

    182 views / 0 likes - added

    A big picture intro to chemistry and why it is fascinating. Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a fir

  • 38:29 Khan Academy Live: SAT Reading Class

    Khan Academy Live: SAT Reading Class

    272 views / 0 likes - added

    Need help with SAT reading? Join Eric, one of Khan Academy’s SAT experts, for an SAT reading class. During class, Eric explains a proactive approach to answering reading questions and walks through some of the most common types of questions. This is an ed

  • 1:02:11 Khan Academy Live: SAT Writing Class

    Khan Academy Live: SAT Writing Class

    219 views / 0 likes - added

    Need help with SAT writing? Join Eric, one of Khan Academy’s SAT experts, for an SAT writing class. Eric walks through key grammar concepts like subject-verb agreement and sentence punctuation. This is an edited version of our livestream from March 9, 201

  • 1:10:07 Khan Academy Live: AP Calculus

    Khan Academy Live: AP Calculus

    210 views / 0 likes - added

    Taking AP Calculus? Prep for the exam with our free live tutoring session. Dave, one of our calculus experts, will review key concepts, solve sample questions, and share ways to avoid common mistakes. Prep for your AP Calculus exams on Khan Academy: https

  • 1:02:43 Khan Academy Live: AP US History

    Khan Academy Live: AP US History

    248 views / 0 likes - added

    Taking AP US History? Prep for the AP exam with our free live tutoring session. Kim, our history expert, will share tips and strategies for the exam. Study for AP US History on Khan Academy: https://www.khanacademy.org/humanities/us-history/ap-us-history

  • 48:26 Khan Academy Live: SAT Math

    Khan Academy Live: SAT Math

    336 views / 0 likes - added

    Need help with SAT math? Join Eric, one of Khan Academy’s SAT experts, for an SAT math class. Eric reviews some of the most important math skills for the test and provides tips on how to avoid careless mistakes. This is a recording of our May 16 livestrea

  • 51:15 Khan Academy Live: SAT Writing

    Khan Academy Live: SAT Writing

    220 views / 0 likes - added

    Need help with SAT writing? Join Eric, one of Khan Academy’s SAT experts, for a live SAT writing class Tuesday, May 30 at 7 pm ET/4pm PT. It’s free! Eric will walk through key grammar concepts like subject-verb agreement and sentence punctuation. Can’t ma

  • 05:05 Parallel structure | Syntax | Khan Academy

    Parallel structure | Syntax | Khan Academy

    236 views / 0 likes - added

    Parallel structure isn’t a set rule, but more of a stylistic choice: it helps sentence elements maintain a pattern. This is a very special episode because it’s Paige’s last video with us as a KA intern! We will miss having Paige as a contributor to the Gr

  • 04:44 Relative clauses | Syntax | Khan Academy

    Relative clauses | Syntax | Khan Academy

    226 views / 0 likes - added

    A relative pronoun is a word like “that” or “which” or “who”, so a relative clause is a clause that begins with a relative pronoun. In the sentence “The dragon who breathed blue fire has retired,” “who breathed blue fire” is a relative clause. Learn more

  • 07:04 Dependent and independent clauses | Syntax | Khan Academy

    Dependent and independent clauses | Syntax | Khan Academy

    254 views / 0 likes - added

    Independent clauses can stand on their own as sentences, but dependent clauses can’t. We’ll take a closer look at what this means. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/syntax/e/dependent-and-independent-clauses Wat

  • 05:57 Phrases and clauses | Syntax | Khan Academy

    Phrases and clauses | Syntax | Khan Academy

    251 views / 0 likes - added

    A phrase is any collection of words that behaves like a part of speech, like a noun phrase (“my brother Stu”), an adjectival phrase (“in a different shade of blue”), or an adverbial phrase (“with elegance and tact”). A clause is any noun phrase plus a ver

  • 04:19 Dangling modifiers | Syntax | Khan Academy

    Dangling modifiers | Syntax | Khan Academy

    218 views / 0 likes - added

    A modifying word or phrase “dangles” when it doesn’t apply to the word it’s supposed to modify. Learn how to spot and fix this problem! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/syntax/e/dangling-modifiers/ Watch the ne

  • 04:43 Subject, direct object, and indirect object | Syntax | Khan Academy

    Subject, direct object, and indirect object | Syntax | Khan Academy

    178 views / 0 likes - added

    A subject is the noun phrase that drives the action of a sentence; in the sentence “Jake ate cereal,” Jake is the subject. The direct object is the thing that the subject acts upon, so in that last sentence, “cereal” is the direct object; it’s the thing J

  • 02:34 Subjects and predicates | Syntax | Khan Academy

    Subjects and predicates | Syntax | Khan Academy

    174 views / 0 likes - added

    A subject is the noun or pronoun-based part of a sentence, and a predicate is the verb-based part that the subject performs. Let’s explore how that works in context. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/syntax/e/id

  • 04:38 Run-ons and comma splices | Syntax | Khan Academy

    Run-ons and comma splices | Syntax | Khan Academy

    190 views / 0 likes - added

    A run-on sentence doesn’t separate any of its independent clauses with the punctuation that it needs, and a comma splice incorrectly separates two independent clauses with a comma, instead of a comma-and-coordinating-conjunction. Practice this yourself on

  • 03:48 Recognizing fragments | Syntax | Khan Academy

    Recognizing fragments | Syntax | Khan Academy

    190 views / 0 likes - added

    A sentence fragment is a chunk of language that hasn’t made it all the way to being a working sentence; it might be missing a verb, or there might not be a subject. Learn how to turn a fragment into a sentence in this video! Practice this yourself on Khan

  • 04:07 Pronoun-antecedent agreement | Syntax | Khan Academy

    Pronoun-antecedent agreement | Syntax | Khan Academy

    203 views / 0 likes - added

    An antecedent is “the thing that came before”. When you use a pronoun, it’s standing in for a word you used previously—that’s the antecedent. Join us as we demonstrate how to make sure that your pronouns and antecedents match up with one another: that’s c

  • 04:53 Subject-verb agreement | Syntax | Khan Academy

    Subject-verb agreement | Syntax | Khan Academy

    235 views / 0 likes - added

    Agreement is the art of making sure that sentence parts agree with one another; you want to make sure that your subjects and verbs match up. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/syntax/e/subject-verb-agreement Watc

  • 04:14 Compound-complex sentences | Syntax | Khan Academy

    Compound-complex sentences | Syntax | Khan Academy

    300 views / 0 likes - added

    Compound-complex sentences are compound sentences with dependent or subordinate clauses added to them. Paige and Rosie explain how to spot and use them. Practice this yourself on Khan Academy right now www.khanacademy.org/syntax/e/complex-and-compound-com

  • 05:07 Complex sentences | Syntax | Khan Academy

    Complex sentences | Syntax | Khan Academy

    187 views / 0 likes - added

    Complex sentences are simple sentences with dependent or subordinate clauses added to them. Paige and Rosie explain how to spot them and use them in this video. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/syntax/v/compound-comple

  • 04:29 Simple and compound sentences | Syntax | Khan Academy

    Simple and compound sentences | Syntax | Khan Academy

    258 views / 0 likes - added

    A simple sentence contains one independent clause. A compound sentence contains more than one! Put another way: a simple sentence contains a subject and a predicate, but a compound sentence contains more than one subject and more than one predicate. Pract

  • 02:50 Exclamations | Syntax | Khan Academy

    Exclamations | Syntax | Khan Academy

    187 views / 0 likes - added

    An exclamation is a sentence that expresses great emotion! David and Paige covered declarative, interrogative, and imperative sentences; now they tackle a fourth type of sentence that ends in an exclamation mark. Find out more! Watch the next lesson: http

  • 03:32 Three types of sentence | Syntax | Khan Academy

    Three types of sentence | Syntax | Khan Academy

    241 views / 0 likes - added

    Three essential types of sentence are declarative sentences (which are statements), interrogative sentences (which are questions), and imperative sentences (which are orders). Join us as we give examples of each! Practice this yourself on Khan Academy rig

  • 04:34 What is a sentence? | Syntax | Khan Academy

    What is a sentence? | Syntax | Khan Academy

    167 views / 0 likes - added

    A sentence is a grammatically complete idea. All sentences have a noun or pronoun component called the subject, and a verb part called the predicate. David and Paige explore this division across several different example sentences. Watch the next lesson:

  • 02:54 BONUS: "FANBOYS," a mnemonic song | Conjunctions | Parts of speech| Khan Academy

    BONUS: "FANBOYS," a mnemonic song | Conjunctions | Parts of speech| Khan Academy

    257 views / 0 likes - added

    FANBOYS" is a mnemonic device you can use to help remember the coordinating conjunctions of English. Team Grammar made this video, figuring that we couldn't very well cover conjunctions without writing a song, now could we? If you're moved to make your ow

  • 05:12 Ellipses | Punctuation | Khan Academy

    Ellipses | Punctuation | Khan Academy

    181 views / 0 likes - added

    Ellipses are three little dots that we use to show a pause or that a portion of a quote has been removed. Learn how to use them in this video. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneous-punctuation/e/introd

  • 04:09 Parentheses | Punctuation | Khan Academy

    Parentheses | Punctuation | Khan Academy

    127 views / 0 likes - added

    Parentheses set off extra information (such as a writer's remarks, an interruption, or a reference) from the rest of a sentence. Learn how to use them in this video! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneo

  • 04:51 Hyphens vs. dashes | Punctuation | Khan Academy

    Hyphens vs. dashes | Punctuation | Khan Academy

    186 views / 0 likes - added

    Hyphens and dashes look pretty similar, but their uses are very different! Learn when to use each one in this video. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneous-punctuation/e/dashes-and-hyphens Watch the nex

  • 06:20 Dashes | Punctuation | Khan Academy

    Dashes | Punctuation | Khan Academy

    186 views / 0 likes - added

    Dashes are like little actors—they can behave like colons, pairs of commas, or parentheses. Learn how to use them in this video! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneous-punctuation/e/introduction-to-the-

  • 03:13 Using quotation marks in titles | Punctuation | Khan Academy

    Using quotation marks in titles | Punctuation | Khan Academy

    159 views / 0 likes - added

    Learn how to use quotation marks to title things like poems, songs, and episodes of TV shows. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneous-punctuation/e/italics--underlines--and-quotes/ Watch the next lesson:

  • 04:18 How to use italics and underlines | Punctuation | Khan Academy

    How to use italics and underlines | Punctuation | Khan Academy

    204 views / 0 likes - added

    Learn how to use italics and underlines when writing the titles of works or when emphasizing a particular word or phrase. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneous-punctuation/e/italics--underlines--and-qu

  • 10:57 BONUS: History of the possessive apostrophe | The Apostrophe | Punctuation | Khan Academy

    BONUS: History of the possessive apostrophe | The Apostrophe | Punctuation | Khan Academy

    235 views / 0 likes - added

    David, Paige, and Jake cover the fascinating history of the possessive apostrophe. Stay tuned for this bonus video! Missed the previous lesson? Watch here: https://www.khanacademy.org/humanities/grammar/punctuation/the-apostrophe/v/bonus-history-of-the-ap

  • 05:40 BONUS: History of the apostrophe | The Apostrophe | Punctuation | Khan Academy

    BONUS: History of the apostrophe | The Apostrophe | Punctuation | Khan Academy

    179 views / 0 likes - added

    The apostrophe has a bizarre history, including being the name for something that's not really related to grammar at all. David, Paige, and special guest Jake explain. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/punctuation/the-a

  • 02:31 Choosing between its and it’s | The Apostrophe | Punctuation | Khan Academy

    Choosing between its and it’s | The Apostrophe | Punctuation | Khan Academy

    178 views / 1 likes - added

    David and Paige explain the meaning of two English words that look and sound very similar but act very different: _its_ and _it's_. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-apostrophe

  • 02:51 Apostrophes and plurals | The Apostrophe | Punctuation | Khan Academy

    Apostrophes and plurals | The Apostrophe | Punctuation | Khan Academy

    175 views / 0 likes - added

    There is *one* extremely rare case in which we use apostrophes to make things plural. David and Paige, KA's resident grammarians, discuss this unusual case. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/p

  • 04:11 Advanced (plural) possession | The Apostrophe | Punctuation | Khan Academy

    Advanced (plural) possession | The Apostrophe | Punctuation | Khan Academy

    231 views / 0 likes - added

    Paige and David talk about using apostrophes to show that something belongs to multiple people. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-apostrophe/e/advanved--plural--possesion Watch

  • 01:51 Possession for words ending in “s” | The Apostrophe | Punctuation | Khan Academy

    Possession for words ending in “s” | The Apostrophe | Punctuation | Khan Academy

    183 views / 0 likes - added

    Do words that end in "s" still need _'s_ to show possession? David and Paige explain! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-apostrophe/e/introduction-to-the-possessive-case Watch the next lesson: https://www.kha

  • 03:45 Introduction to the possessive | The Apostrophe | Punctuation | Khan Academy

    Introduction to the possessive | The Apostrophe | Punctuation | Khan Academy

    209 views / 0 likes - added

    Apostrophes can help show when something belongs to someone. Paige and David explain how! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-apostrophe/e/introduction-to-the-possessive-case Watch the next lesson: https://www

  • 03:36 Introduction to contractions | The Apostrophe | Punctuation | Khan Academy

    Introduction to contractions | The Apostrophe | Punctuation | Khan Academy

    269 views / 0 likes - added

    Apostrophes are great at standing in for missing letters, allowing us to shorten words. Paige and David discuss contractions and the Principle of Least Effort. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-apostrophe/e/

  • 04:50 Introduction to the apostrophe | The Apostrophe | Punctuation | Khan Academy

    Introduction to the apostrophe | The Apostrophe | Punctuation | Khan Academy

    259 views / 0 likes - added

    David and Paige, KA’s resident grammarians, introduce a new piece of punctuation: the apostrophe! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-comma/e/introduction-to-the-apostrophe Watch the next lesson: https://www.k

  • 03:43 BONUS: The Oxford comma | Punctuation | Grammar | Khan Academy

    BONUS: The Oxford comma | Punctuation | Grammar | Khan Academy

    199 views / 0 likes - added

    David and Paige tackle the great comma debate of our time: Oxford comma or no Oxford comma? Missed the previous lesson? https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/v/appositives-the-comma-punctuation-khan-academy?utm_source=YT&utm

  • 03:00 Appositives | Punctuation | Grammar | Khan Academy

    Appositives | Punctuation | Grammar | Khan Academy

    194 views / 0 likes - added

    David and Paige, KA’s resident grammarians, cover appositives and how to use commas along with them. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/e/appositives?utm_source=YT&utm_med

  • 03:00 Commas in dialogue | Punctuation | Grammar | Khan Academy

    Commas in dialogue | Punctuation | Grammar | Khan Academy

    241 views / 0 likes - added

    “Today we’re going to talk about using commas in dialogue,” said David and Paige, KA’s resident grammarians. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/e/commas-in-dialogue?utm_so

  • 03:24 More uses for commas | Punctuation | Grammar | Khan Academy

    More uses for commas | Punctuation | Grammar | Khan Academy

    199 views / 0 likes - added

    David and Paige, KA’s resident grammarians, discuss tag questions, yes and no statements, and direct address -- all situations where the comma is super useful. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/v/c

  • 01:51 Punctuating a list | Punctuation | Grammar | Khan Academy

    Punctuating a list | Punctuation | Grammar | Khan Academy

    224 views / 0 likes - added

    Learn how to use commas to punctuate a written list of people, things, actions, or events. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/e/punctuating-lists?utm_source=YT&utm_medium=

  • 04:35 Commas and introductory elements | Punctuation | Grammar | Khan Academy

    Commas and introductory elements | Punctuation | Grammar | Khan Academy

    193 views / 0 likes - added

    In English, you use commas to separate introductory elements from the rest of a sentence. Find out how with David and Paige! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/e/commas-an

  • 03:19 Commas in space and time | The Comma | Punctuation | Khan Academy

    Commas in space and time | The Comma | Punctuation | Khan Academy

    196 views / 0 likes - added

    Learn how to use commas when writing addresses (in space) and dates (in time). Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/e/salutations--valedictions--dates--and-addresses Watch t

  • 02:18 Salutations and valedictions | Punctuation | Grammar | Khan Academy

    Salutations and valedictions | Punctuation | Grammar | Khan Academy

    181 views / 0 likes - added

    David and Paige, KA’s resident grammarians, talk about how to address and sign off on letters using commas! Watch the next lesson: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/v/commas-in-space-and-time-the-comma-punctuation-khan-a

  • 03:59 Meet the Comma | Punctuation | Grammar | Khan Academy

    Meet the Comma | Punctuation | Grammar | Khan Academy

    225 views / 0 likes - added

    David and Paige introduce you to the superhero of the punctuation world: the comma! Practice this yourself on Khan Academy right now: . Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/

  • 02:52 Three ways to end a sentence | Punctuation | Khan Academy

    Three ways to end a sentence | Punctuation | Khan Academy

    186 views / 0 likes - added

    David and Paige, KA’s resident grammarians, introduce the three ways to end a sentence: the period, the exclamation point, and the question mark. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-comma/e/three-ways-to-end-a

  • 06:08 Beginning sentences with conjunctions | The parts of speech | Grammar | Khan Academy

    Beginning sentences with conjunctions | The parts of speech | Grammar | Khan Academy

    203 views / 0 likes - added

    Is it okay to begin a sentence with a conjunction like "but" or "because"? Yes. David explains why. Missed the previous lesson? https://www.khanacademy.org/humanities/grammar/partsofspeech/conjunctions/v/correlative-conjunctions?utm_source=YT&utm_medium=D

  • 03:12 Correlative conjunctions | The parts of speech | Grammar | Khan Academy

    Correlative conjunctions | The parts of speech | Grammar | Khan Academy

    259 views / 0 likes - added

    Correlative conjunctions work in pairs to connect parts of sentences. David teaches you how they do it! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/conjunctions/e/correlative-conjuntions?u

  • 05:27 Subordinating conjunctions | The parts of speech | Grammar | Khan Academy

    Subordinating conjunctions | The parts of speech | Grammar | Khan Academy

    202 views / 0 likes - added

    Subordinating conjunctions join two parts of complex sentences––independent clauses to dependent clauses. David explains how. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/conjunctions/e/coo

  • 04:33 Coordinating conjunctions | The parts of speech | Grammar | Khan Academy

    Coordinating conjunctions | The parts of speech | Grammar | Khan Academy

    236 views / 0 likes - added

    Coordinating conjunctions connect parts of sentences to each other. David explains how. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/conjunctions/e/meet-the-conjunction?utm_source=YT&utm_me

  • 03:50 Adjectives and commas | Adjectives | Khan Academy

    Adjectives and commas | Adjectives | Khan Academy

    212 views / 0 likes - added

    When using more than one adjective, sometimes you put a comma between them and sometimes you don't. Learn how to tell when you need a comma in this video! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-modifier/e/commas-

  • 09:03 BONUS VIDEO | Singular They | The parts of speech | Grammar | Khan Academy

    BONUS VIDEO | Singular They | The parts of speech | Grammar | Khan Academy

    194 views / 0 likes - added

    You may have been hearing a lot about the "singular they" recently. But what is it? How does it work, what is its history, and is it grammatical? Let's find out. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/the-modif

  • 02:55 Emphatic pronouns | The parts of speech | Grammar | Khan Academy

    Emphatic pronouns | The parts of speech | Grammar | Khan Academy

    185 views / 0 likes - added

    Sometimes we use reflexive pronouns like "myself" and "ourselves" for emphasis in a sentence, like, "If you won't help me, then I'll do it myself!" KA's Grammar Fellow, David, explains this usage. Practice this yourself on Khan Academy right now: https://

  • 05:03 Indefinite Pronouns | The parts of speech | Grammar | Khan Academy

    Indefinite Pronouns | The parts of speech | Grammar | Khan Academy

    187 views / 0 likes - added

    David, Khan Academy's Grammar Fellow, covers three nifty features of indefinite pronouns, which are pronouns that are just a little vague, y'know? Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspee

  • 05:18 Pronoun number | The parts of speech | Grammar | Khan Academy

    Pronoun number | The parts of speech | Grammar | Khan Academy

    255 views / 0 likes - added

    The difference between something being singular or plural is what we call 'grammatical number' in English. Here's how that idea applies to pronouns! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofsp

  • 04:39 Grammatical person and pronouns | The parts of speech | Grammar | Khan Academy

    Grammatical person and pronouns | The parts of speech | Grammar | Khan Academy

    209 views / 0 likes - added

    There's this idea in grammar called grammatical person that helps describe who's being talked about in a sentence. David, KA's Grammar Fellow, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/parts

  • 05:34 Subject and object pronouns | The parts of speech | Grammar | Khan Academy

    Subject and object pronouns | The parts of speech | Grammar | Khan Academy

    180 views / 0 likes - added

    Before we get any further with pronouns, let's cover what the difference between a subject and an object pronoun is, because the distinction between those two concepts will start coming up a good deal. Practice this yourself on Khan Academy right now: htt

  • 04:47 Who versus whom | The parts of speech | Grammar | Khan Academy

    Who versus whom | The parts of speech | Grammar | Khan Academy

    184 views / 0 likes - added

    When do you use who, and when do you use whom? David, KA's grammarian, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/the-pronoun/e/relative-pronouns?utm_source=YT&utm_medium=Desc&u

  • 05:41 That versus which | The parts of speech | Grammar | Khan Academy

    That versus which | The parts of speech | Grammar | Khan Academy

    209 views / 0 likes - added

    Much has been made of the distinction between "that" and "which" in English, but it can mostly be summed up in two points: 1. "That" doesn't work so well with commas. 2. "Which" doesn't work so well with people. David the Grammarian explains. Watch the ne

  • 01:56 Relative pronouns | The parts of speech | Grammar | Khan Academy

    Relative pronouns | The parts of speech | Grammar | Khan Academy

    259 views / 0 likes - added

    We use the relative pronouns to connect clauses together, like "the man *who sold the world* is coming over for dinner." David, KA's Grammar Fellow, explains. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/the-pronoun/

  • 05:10 Reflexive pronouns | The parts of speech | Grammar | Khan Academy

    Reflexive pronouns | The parts of speech | Grammar | Khan Academy

    207 views / 0 likes - added

    We use reflexive pronouns (like "herself" and "ourselves") when the subject and the object of a sentence are the same thing. David, KA's Grammar Fellow, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/gra

  • 04:52 Possessive pronouns | The parts of speech | Grammar | Khan Academy

    Possessive pronouns | The parts of speech | Grammar | Khan Academy

    272 views / 0 likes - added

    We can use pronouns to show possession relationships, describing what things belong to which people, like "her shoe" or "the book is mine." Possessive pronouns come in two flavors: adjective and noun! David, KA's resident grammarian, covers the difference

  • 03:15 Personal pronouns | The parts of speech | Grammar | Khan Academy

    Personal pronouns | The parts of speech | Grammar | Khan Academy

    211 views / 0 likes - added

    Let's meet the personal pronouns! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/the-pronoun/e/meet-the-personal-pronoun?utm_source=YT&utm_medium=Desc&utm_campaign=grammar Watch the next less

  • 02:00 What is a pronoun? | The parts of speech | Grammar | Khan Academy

    What is a pronoun? | The parts of speech | Grammar | Khan Academy

    200 views / 0 likes - added

    Pronouns are words that can replace nouns, like the way "it" replaces "elephant" in "I looked at the elephant. It was grey." Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/the-pronoun/e/the-q

  • 04:53 Modal verbs | The parts of speech | Grammar | Khan Academy

    Modal verbs | The parts of speech | Grammar | Khan Academy

    219 views / 0 likes - added

    There's a class of helper verbs known as modals that we use to express a bunch of conditions: we can use them to give advice, make guesses at how necessary or likely something is, make requests of people, and so on. They're super useful. Practice this you

  • 02:11 Perfect progressive aspect | The parts of speech | Grammar | Khan Academy

    Perfect progressive aspect | The parts of speech | Grammar | Khan Academy

    196 views / 0 likes - added

    We use the perfect progressive aspect to talk about an action that was once ongoing, but has since completed, like "I had been waiting for twenty minutes." Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/pa

  • 02:31 Perfect Aspect | The parts of speech | Grammar | Khan Academy

    Perfect Aspect | The parts of speech | Grammar | Khan Academy

    205 views / 0 likes - added

    If verb tense allows you to control the past, the present, and the future, then aspect gives you even finer control over time. David, Khan Academy's resident grammarian, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.o

  • 02:45 Progressive Aspect | The parts of speech | Grammar | Khan Academy

    Progressive Aspect | The parts of speech | Grammar | Khan Academy

    218 views / 0 likes - added

    If verb tense allows you to control the past, the present, and the future, then aspect gives you even finer control over time. David, Khan Academy's resident grammarian, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.o

  • 01:32 Simple Aspect | The parts of speech | Grammar | Khan Academy

    Simple Aspect | The parts of speech | Grammar | Khan Academy

    210 views / 0 likes - added

    If verb tense allows you to control the past, the present, and the future, then aspect gives you even finer control over time. David, Khan Academy's resident grammarian, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.o

  • 01:50 Introduction to verb aspect | The parts of speech | Grammar | Khan Academy

    Introduction to verb aspect | The parts of speech | Grammar | Khan Academy

    223 views / 0 likes - added

    If verb tense allows you to control the past, the present, and the future, then aspect gives you even finer control over time. David, Khan Academy's resident grammarian, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.o

  • 02:53 The truly irregular verbs | The parts of speech | Grammar | Khan Academy

    The truly irregular verbs | The parts of speech | Grammar | Khan Academy

    201 views / 0 likes - added

    Some irregular verbs just won't be categorized. They don't fit into neat little boxes. These are those verbs. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/e/intro-to-irregular

  • 03:14 The irregular verb gets taken for a ride | Grammar | Khan Academy

    The irregular verb gets taken for a ride | Grammar | Khan Academy

    215 views / 0 likes - added

    This group of irregular verbs have vowel sounds that change in a predictable way, when they go from the present to the past tense. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs

  • 03:11 The vowel-shift irregular verb | The parts of speech | Grammar | Khan Academy

    The vowel-shift irregular verb | The parts of speech | Grammar | Khan Academy

    203 views / 0 likes - added

    This group of irregular verbs have vowel sounds that change in a predictable way, when they go from the present to the past tense. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs

  • 01:53 The funky -ed irregular verb | The parts of speech | Grammar | Khan Academy

    The funky -ed irregular verb | The parts of speech | Grammar | Khan Academy

    219 views / 0 likes - added

    These are the most regular of the irregular verbs; while they don't behave exactly like regular verbs, like present tense "walk" become past tense "walked", they do maintain the "-ed" sound. It's just spelled differently. Practice this yourself on Khan Ac

  • 03:29 Introduction to irregular verbs | The parts of speech | Grammar | Khan Academy

    Introduction to irregular verbs | The parts of speech | Grammar | Khan Academy

    233 views / 0 likes - added

    Words like "walk" and "look" are regular verbs – they behave in a predictable way. But there's a whole class of words in English, called irregular verbs, that are harder to predict. David, KA's Grammar Fellow, explains. Practice this yourself on Khan Acad

  • 03:02 Linking verbs | The parts of speech | Grammar | Khan Academy

    Linking verbs | The parts of speech | Grammar | Khan Academy

    421 views / 0 likes - added

    In a previous video, we established that one thing verbs can do is show actions, like "the bear runs." Verbs can also link ideas to one another, like "the bear looks cheerful." Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofs

  • 02:54 Helping verbs | The parts of speech | Grammar | Khan Academy

    Helping verbs | The parts of speech | Grammar | Khan Academy

    262 views / 0 likes - added

    We've established that verbs can show actions and link ideas together. Now, let's talk about how some verbs can be used to help other verbs. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/gra

  • 02:50 The future tense | The parts of speech | Grammar | Khan Academy

    The future tense | The parts of speech | Grammar | Khan Academy

    228 views / 0 likes - added

    When you want to talk about the future in English, you use the future tense. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/v/linking-verbs-the-parts-of-speech-grammar?utm_source=YT&utm_medium=Desc&utm_ca

  • 02:00 The past tense | The parts of speech | Grammar | Khan Academy

    The past tense | The parts of speech | Grammar | Khan Academy

    234 views / 0 likes - added

    When you want to talk about events that have already happened, you use the past tense. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/v/the-future-tense-verbs-the-parts-of-speech?utm_source=YT&utm_medium=

  • 02:01 The present tense | The parts of speech | Grammar | Khan Academy

    The present tense | The parts of speech | Grammar | Khan Academy

    211 views / 0 likes - added

    How do we talk about things that are happening right now? Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/v/the-past-tense-verbs-the-parts-of-speech?utm_source=YT&utm_medium=Desc&utm_campaign=grammar Misse

  • 01:46 Introduction to verb tense | The parts of speech | Grammar | Khan Academy

    Introduction to verb tense | The parts of speech | Grammar | Khan Academy

    222 views / 0 likes - added

    An understanding of verb tense will make you into a TIME WIZARD, with the ability to control the past, the present, and the future – with your words, anyway. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/

  • 01:26 Introduction to verbs | The parts of speech | Grammar | Khan Academy

    Introduction to verbs | The parts of speech | Grammar | Khan Academy

    232 views / 0 likes - added

    Let's explore what verbs are, and what they do! David, KA's Grammar Fellow, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/e/identifying-verbs?utm_source=YT&utm_medium

  • 04:57 Irregular plural nouns |– foreign plurals | The parts of speech | Grammar | Khan Academy

    Irregular plural nouns |– foreign plurals | The parts of speech | Grammar | Khan Academy

    245 views / 0 likes - added

    You don't need to know how to speak Latin and Greek in order to understand English, but some words in English come from those languages. It's helpful to know how some Greek and Latin words change from singular to plural. Practice this yourself on Khan Aca

  • 02:46 Introduction to Grammar | Grammar | Khan Academy

    Introduction to Grammar | Grammar | Khan Academy

    373 views / 0 likes - added

    Khan Academy Grammarian David Rheinstrom welcomes you to his favorite topic: the study of language, its rules, and its conventions. By understanding English – by speaking it, by writing it, by reading this very sentence – you are a grammarian yourself! Wa

  • 05:09 Finding Units Of Rate Constant K

    Finding Units Of Rate Constant K

    304 views / 0 likes - added

    How to find the units for the rate constant k for a zero, first, or second order reaction. Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. Thi

  • 05:38 Prepositional Phrases | Prepositions | The Parts Of Speech | Grammar

    Prepositional Phrases | Prepositions | The Parts Of Speech | Grammar

    222 views / 0 likes - added

    Prepositional phrases are word chunks that begin with a preposition. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-preposition/e/prepositional-phrases/ Missed the previous lesson? https://www.khanacademy.org/the-preposi

  • 05:16 Prepositions Of Time | Prepositions | The Parts Of Speech | Grammar

    Prepositions Of Time | Prepositions | The Parts Of Speech | Grammar

    227 views / 0 likes - added

    Some prepositions help describe moments in time. Learn more and enhance your powers of time wizardry! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-preposition/e/prepositions-about-time-and-space Watch the next lesson:

  • 05:10 Prepositions Of Space | Prepositions | The Parts Of Speech | Grammar

    Prepositions Of Space | Prepositions | The Parts Of Speech | Grammar

    239 views / 0 likes - added

    Some prepositions help describe relationships between objects and their locations in space. David explains how! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-preposition/e/prepositions-about-time-and-space Watch the nex

  • 03:49 Meet The Prepositions | Prepositions | The Parts Of Speech | Grammar

    Meet The Prepositions | Prepositions | The Parts Of Speech | Grammar

    230 views / 1 likes - added

    Prepositions help show us where things are in space and time. Practice this yourself on Khan Academy right now: http://www.khanacademy.org/the-preposition/e/meet-the-preposition Watch the next lesson: https://www.youtube.com/watch?v=96sojEZsKu8 The parts

  • 06:44 BONUS VIDEO | Terminal Prepositions | Prepositions | The Parts Of Speech

    BONUS VIDEO | Terminal Prepositions | Prepositions | The Parts Of Speech

    212 views / 0 likes - added

    It's totally okay to end sentences with prepositions! David, Khan Academy's grammarian-in-chief, explains the history and the context behind this long-held grammar myth. Missed the previous lesson? Watch here: https://www.khanacademy.org/humanities/gramma

  • 06:52 Introduction To Partial Pressure | Gases And Kinetic Molecular Theory | Chemistry | Khan Academy

    Introduction To Partial Pressure | Gases And Kinetic Molecular Theory | Chemistry | Khan Academy

    375 views / 0 likes - added

    Definition of partial pressure and Dalton's law of partial pressure. Example of calculating partial pressure of a gas in a mixture from the total pressure and partial pressure of the other gases in the mixture. Chemistry on Khan Academy: Did you know that

  • 12:49 Scientific Notation Examples | Pre-Algebra | Khan Academy

    Scientific Notation Examples | Pre-Algebra | Khan Academy

    295 views / 0 likes - added

    More scientific notation examples Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/scientific-notation/e/scientific_notation?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra W

  • 02:36 Number Patterns: Seeing Relationships | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    Number Patterns: Seeing Relationships | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    300 views / 0 likes - added

    Laying the foundation for algebraic thinking by learning to recognize the relationships between patterns and graphing out those relationships. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applyin

  • 00:52 Reading Bar Charts: Basic Example | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    Reading Bar Charts: Basic Example | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    276 views / 0 likes - added

    Let's start with this bar chart that brings back the days of Harry Potter! Putting our toes in the water on this one... Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/

  • 07:34 Hexadecimal Number System | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    Hexadecimal Number System | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    336 views / 0 likes - added

    Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/decimal-to-binary?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math

  • 03:21 Rational Number Word Problem With Fractions | Pre-Algebra | Khan Academy

    Rational Number Word Problem With Fractions | Pre-Algebra | Khan Academy

    323 views / 0 likes - added

    Word problems force us to put concepts to work using real-world applications. In this example, determine the volume of frozen water and express the answer as a fraction. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.o

  • 02:48 Adding In Binary | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    Adding In Binary | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    369 views / 0 likes - added

    Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/binary-multiplication?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/

  • 03:36 Approximating Irrational Number Exercise Example | Pre-Algebra | Khan Academy

    Approximating Irrational Number Exercise Example | Pre-Algebra | Khan Academy

    283 views / 0 likes - added

    Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/order-of-operations/rational-irrational-numbers/e/approximating-irrational-numbers?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the nex

  • 03:00 Inverse Property Of Addition | Arithmetic Properties | Pre-Algebra | Khan Academy

    Inverse Property Of Addition | Arithmetic Properties | Pre-Algebra | Khan Academy

    361 views / 0 likes - added

    The simple idea that a number plus its negative is 0 Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/order-of-operations/arithmetic_properties/v/inverse-property-of-multiplication?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra M

  • 03:43 Converting From Decimal To Hexadecimal Representation | Pre-Algebra | Khan Academy

    Converting From Decimal To Hexadecimal Representation | Pre-Algebra | Khan Academy

    257 views / 0 likes - added

    Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/binary-addition?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math/p

  • 02:36 Converting Decimals To Percents | Decimals | Pre-Algebra | Khan Academy

    Converting Decimals To Percents | Decimals | Pre-Algebra | Khan Academy

    283 views / 0 likes - added

    Need to convert a decimal to a percent? Ok, we'll just use our fraction friends to get us there. Watch and be amazed. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-intro-p

  • 02:35 Dividing Whole Numbers And Fractions: Studying | Fractions | Pre-Algebra | Khan Academy

    Dividing Whole Numbers And Fractions: Studying | Fractions | Pre-Algebra | Khan Academy

    353 views / 0 likes - added

    Solve a word problem by dividing a fraction by a whole number. The example used in this video is 1/5 ÷ 4. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/dividing-fractions-pre-alg

  • 03:53 Plotting Basic Fractions On The Number Line | Fractions | Pre-Algebra | Khan Academy

    Plotting Basic Fractions On The Number Line | Fractions | Pre-Algebra | Khan Academy

    370 views / 0 likes - added

    Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/understanding-fractions-pre-alg/e/fractions_on_the_number_line_1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the nex

  • 04:00 Finding Factors And Multiples | Factors And Multiples | Pre-Algebra | Khan Academy

    Finding Factors And Multiples | Factors And Multiples | Pre-Algebra | Khan Academy

    403 views / 0 likes - added

    To find the factors of a number means to find all the whole numbers that the number in question is divisible by. Can you help us find the factors in this example? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math

  • 05:27 Converting Directly From Binary To Hexadecimal | Pre-Algebra | Khan Academy

    Converting Directly From Binary To Hexadecimal | Pre-Algebra | Khan Academy

    256 views / 0 likes - added

    Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/World-of-exponents/v/exponents-warmup?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math/pre-algebra/app

  • 06:56 Exponents And Powers Of Zero Patterns | Pre-Algebra | Khan Academy

    Exponents And Powers Of Zero Patterns | Pre-Algebra | Khan Academy

    323 views / 0 likes - added

    Now that we understand how to interpret an exponent and how the patterns in zeros are related to the exponent, we can solve more complicated problems! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra

  • 09:29 Dividing Decimals With Hundredths Example 3 | Decimals | Pre-Algebra | Khan Academy

    Dividing Decimals With Hundredths Example 3 | Decimals | Pre-Algebra | Khan Academy

    327 views / 0 likes - added

    The old saying is "practice makes perfect." Let's keep practicing dividing decimals and making our divisor a whole number. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/dividing-d

  • 02:27 Inequality Word Problem: One Variable | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    Inequality Word Problem: One Variable | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    280 views / 0 likes - added

    This time we're creating a variable to represent a number, and then writing an inequality. We're building on our knowledge. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-to

  • 04:51 Cube Root Of A Non-perfect Cube | Pre-Algebra | Khan Academy

    Cube Root Of A Non-perfect Cube | Pre-Algebra | Khan Academy

    331 views / 0 likes - added

    Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/cube-root-tutorial/e/cube_roots?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson: https://www.khanacadem

  • 03:45 Visualizing Equivalent Fractions | Fractions | Pre-Algebra | Khan Academy

    Visualizing Equivalent Fractions | Fractions | Pre-Algebra | Khan Academy

    358 views / 0 likes - added

    To understand equivalent fractions it helps to "see" the fractions using something like a grid with shaded and unshaded sections representing the fraction. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-al

  • 03:52 Converting From Decimal To Binary | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    Converting From Decimal To Binary | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    338 views / 0 likes - added

    Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/large-number-decimal-to-binary?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanaca

  • 04:33 Multiplying Negative And Positive Fractions | Fractions | Pre-Algebra | Khan Academy

    Multiplying Negative And Positive Fractions | Fractions | Pre-Algebra | Khan Academy

    338 views / 0 likes - added

    See examples of multiplying and dividing fractions with negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplying-fractions-pre-alg/e/multiplying_fractions?utm_

  • 02:32 Dividing Whole Numbers And Fractions: Potpourri | Fractions | Pre-Algebra | Khan Academy

    Dividing Whole Numbers And Fractions: Potpourri | Fractions | Pre-Algebra | Khan Academy

    337 views / 0 likes - added

    Solve a word problem by dividing a whole number by a fraction. The example used in this video is 4 ÷ 1/5. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/dividing-fractions-pre-alg

  • 04:31 Number Patterns: Interpreting Relationships | Pre-Algebra | Khan Academy

    Number Patterns: Interpreting Relationships | Pre-Algebra | Khan Academy

    276 views / 0 likes - added

    Examining the points on a number line and interpreting the patterns to discover the relationships. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/number-patterns/e/vis

  • 04:25 Multiplying Challenging Decimals | Decimals | Pre-Algebra | Khan Academy

    Multiplying Challenging Decimals | Decimals | Pre-Algebra | Khan Academy

    273 views / 0 likes - added

    Sometimes multiplying really small decimals (with all those zeros!) can be a little intimidating. Watch as we show you a handy trick to simplify these problems and solve them. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanaca

  • 07:51 Volume: How To Measure It | Measurement | Pre-Algebra | Khan Academy

    Volume: How To Measure It | Measurement | Pre-Algebra | Khan Academy

    297 views / 0 likes - added

    Volume is a measurement in the 3rd dimension. This means that it not only has width and height, but it has depth as well. Let's watch this video in which we get a great explanation of how we measure volume. Practice this lesson yourself on KhanAcademy.org

  • 09:15 Mixed Numbers And Improper Fractions | Fractions | Pre-Algebra | Khan Academy

    Mixed Numbers And Improper Fractions | Fractions | Pre-Algebra | Khan Academy

    359 views / 0 likes - added

    Converting mixed numbers to improper fractions and improper fractions to mixed numbers Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/mixed-numbers-pre-alg/e/converting_mixed_numb

  • 02:07 Percentage Of A Whole Number | Decimals | Pre-Algebra | Khan Academy

    Percentage Of A Whole Number | Decimals | Pre-Algebra | Khan Academy

    236 views / 0 likes - added

    We hope you're beginning to see that there's more than one way to skin a cat. In other words, there are several different ways to solve problems involving percentages, decimals, and fractions. Watch as find the percentage of a whole number. Watch the next

  • 08:30 Multiplying And Dividing Negative Numbers | Pre-Algebra | Khan Academy

    Multiplying And Dividing Negative Numbers | Pre-Algebra | Khan Academy

    334 views / 0 likes - added

    Multiplying and dividing negative numbers Watch the next lesson: https://www.khanacademy.org/math/arithmetic/absolute-value/abs_value_tutorial/v/absolute-value-and-number-lines?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous less

  • 09:50 Adding And Subtracting Fractions | Fractions | Pre-Algebra | Khan Academy

    Adding And Subtracting Fractions | Fractions | Pre-Algebra | Khan Academy

    437 views / 1 likes - added

    How to add and subtract fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/fractions-unlike-denom-pre-alg/e/adding_fractions?utm_source=YT&utm_medium=Desc&utm_campaign=PreA

  • 01:34 Solving Ratio Problems With Graph | Pre-Algebra | Khan Academy

    Solving Ratio Problems With Graph | Pre-Algebra | Khan Academy

    324 views / 0 likes - added

    In this example we'll plot points on the x and y axis to reflect the given ratios. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/solving-ratio-problems-wi

  • 03:50 Introduction To Multiplying Decimals | Decimals | Pre-Algebra | Khan Academy

    Introduction To Multiplying Decimals | Decimals | Pre-Algebra | Khan Academy

    350 views / 0 likes - added

    Multiplying decimals can be confusing because there's always the question as to where the decimals goes in the answer. We're about to show you so you'll never have to question it again! Practice this lesson yourself on KhanAcademy.org right now: https://w

  • 04:17 Introduction To Area And Unit Squares | Measurement | Pre-Algebra | Khan Academy

    Introduction To Area And Unit Squares | Measurement | Pre-Algebra | Khan Academy

    263 views / 0 likes - added

    Cover figures with square units to find their area. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/measurement/area-basics/e/measuring-area-with-unit-squares?utm_source=YT&utm_medium=Desc&utm_campa

  • 06:55 What Are Variables, Expressions, And Equations? | Introduction To Algebra | Algebra I | Khan Academy

    What Are Variables, Expressions, And Equations? | Introduction To Algebra | Algebra I | Khan Academy

    268 views / 0 likes - added

    Learn what variables, expressions, and equations really are. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/introduction-to-algebra/feel-for-equations-and-inequalit/e/dependent-and-independent-variable

  • 03:40 Multi-step Word Problem With Decimals And Subtraction | Pre-Algebra | Khan Academy

    Multi-step Word Problem With Decimals And Subtraction | Pre-Algebra | Khan Academy

    350 views / 0 likes - added

    First visualize this word problem then use subtraction and multiplication of decimals and fractions to get at the answer. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topi

  • 03:28 Inequality Word Problems | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    Inequality Word Problems | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    365 views / 0 likes - added

    We're writing inequalities by using information from the word problems. Woohoo! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/greater-than-less-than/e/writing-numeric

  • 06:29 Multiplying Decimals: Place Value And Reordering | Decimals | Pre-Algebra | Khan Academy

    Multiplying Decimals: Place Value And Reordering | Decimals | Pre-Algebra | Khan Academy

    363 views / 0 likes - added

    We want you to develop an intuition about how to work with decimals. Understanding how you can rewrite decimals by considering the place value will help you multiply! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/

  • 05:05 Solving Ratio Problems With Tables Example 1 | Pre-Algebra | Khan Academy

    Solving Ratio Problems With Tables Example 1 | Pre-Algebra | Khan Academy

    233 views / 0 likes - added

    We're displaying ratios in a table format here, and then asking: given a ratio, solve for equivalent ratios. Here are a few examples to practice on. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/r

  • 08:34 LCM And GCF Word Problems | Factors And Multiples | Pre-Algebra | Khan Academy

    LCM And GCF Word Problems | Factors And Multiples | Pre-Algebra | Khan Academy

    342 views / 1 likes - added

    Here we have a couple of word problems--one searching for the least common multiple and the other for the greatest common factor. Just read them with us slowly and follow along. You'll get it. Practice this lesson yourself on KhanAcademy.org right now: ht

  • 02:49 Percent Word Problem Example 2 | Decimals | Pre-Algebra | Khan Academy

    Percent Word Problem Example 2 | Decimals | Pre-Algebra | Khan Academy

    292 views / 0 likes - added

    It's nice to practice conversion problems, but how about applying our new knowledge of percentages to a real life problem like recycling? Hint: don't forget your long division! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanac

  • 10:00 Introduction To Number Systems And Binary | Pre-Algebra | Khan Academy

    Introduction To Number Systems And Binary | Pre-Algebra | Khan Academy

    258 views / 0 likes - added

    Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/hexadecimal-number-system?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.

  • 09:36 Negative Numbers Introduction | Negative Numbers And Absolute Value | Pre-Algebra | Khan Academy

    Negative Numbers Introduction | Negative Numbers And Absolute Value | Pre-Algebra | Khan Academy

    298 views / 0 likes - added

    Mysterious negative numbers! What ARE they? They are numbers less than zero. If you understand the nature of below zero temperatures, you can understand negative numbers. We'll help. Practice this lesson yourself on KhanAcademy.org right now: https://www.

  • 09:43 Exponent Rules Part 1 | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

    Exponent Rules Part 1 | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

    343 views / 0 likes - added

    Introduction to exponent rules Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/exponent-properties/e/exponent_rules?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the

  • 03:03 Introduction To Exponents | Pre-Algebra | Khan Academy

    Introduction To Exponents | Pre-Algebra | Khan Academy

    303 views / 0 likes - added

    Taking an exponent is basically the act of repeated multiplication. You know how to multiply, right? If so, understanding exponents is completely within your grasp! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/ma

  • 04:16 Least Common Multiple Exercise | Factors And Multiples | Pre-Algebra | Khan Academy

    Least Common Multiple Exercise | Factors And Multiples | Pre-Algebra | Khan Academy

    313 views / 0 likes - added

    We're practicing finding the least common multiple in these example exercises. We'll teach you the prime factorization approach which is a pretty nifty way to find the lcm (least common multiple). Practice this lesson yourself on KhanAcademy.org right now

  • 09:16 Adding/subtracting Negative Numbers | Pre-Algebra | Khan Academy

    Adding/subtracting Negative Numbers | Pre-Algebra | Khan Academy

    350 views / 0 likes - added

    Adding and subtracting negative numbers Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/negatives-absolute-value-pre-alg/mult-div-negatives-pre-alg/v/multiplying-positive-and-negative-numbers?utm_source=YT&utm_medium=Desc&utm_campaign=

  • 09:17 Unit Conversion Within The Metric System | Pre-Algebra | Khan Academy

    Unit Conversion Within The Metric System | Pre-Algebra | Khan Academy

    290 views / 0 likes - added

    Metric unit conversion Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/metric-system-tutorial/v/converting-within-the-metric-system?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? http

  • 02:04 Ratio Word Problem: Boys To Girls | Pre-Algebra | Khan Academy

    Ratio Word Problem: Boys To Girls | Pre-Algebra | Khan Academy

    283 views / 0 likes - added

    In this example, we are given a ratio and then asked to apply that ratio to solve a problem. No problem! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/rat

  • 03:38 Math Patterns Example 1 | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    Math Patterns Example 1 | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    297 views / 0 likes - added

    Part of our exploration of math is learning to identify patterns among numbers. Can you see the pattern in this example? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/exercise/math-patterns?utm_source=YT&utm_mediu

  • 02:39 Comparing Decimals: Ordering From Least To Greatest | Decimals | Pre-Algebra | Khan Academy

    Comparing Decimals: Ordering From Least To Greatest | Decimals | Pre-Algebra | Khan Academy

    336 views / 0 likes - added

    This is a fun example where we reorder decimals from smallest to largest. You're looking for the place value that is the most significant, and then working backwards. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/

  • 03:08 Multiplying Unit Fractions And Whole Numbers | Fractions | Pre-Algebra | Khan Academy

    Multiplying Unit Fractions And Whole Numbers | Fractions | Pre-Algebra | Khan Academy

    362 views / 1 likes - added

    Don't let multiplying whole numbers and fractions get you down. We got this. This explanation will help you become a pro. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplyin

  • 01:11 Subtracting Decimals: Example 1 | Decimals | Pre-Algebra | Khan Academy

    Subtracting Decimals: Example 1 | Decimals | Pre-Algebra | Khan Academy

    301 views / 0 likes - added

    Subtracting decimals...up to the hundredths placement. Line up those decimals before you start. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/adding-decimals-pre-alg/e/subtracting

  • 06:14 How To Plot Inequalities On A Number Line | Pre-Algebra | Khan Academy

    How To Plot Inequalities On A Number Line | Pre-Algebra | Khan Academy

    306 views / 0 likes - added

    Learn how to graph an inequality on a number line to indicate which values make it true. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/greater-than-less-than/e/writin

  • 03:09 Simplifying Square Roots | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

    Simplifying Square Roots | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

    405 views / 0 likes - added

    Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/radical-radicals/e/simplifying_radicals?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson: https://www.kh

  • 06:20 Greatest Common Factor Explained | Factors And Multiples | Pre-Algebra | Khan Academy

    Greatest Common Factor Explained | Factors And Multiples | Pre-Algebra | Khan Academy

    261 views / 0 likes - added

    Here's a nice explanation of least common factor (or least common divisor) along with a few practice example exercises. Let's roll. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/factors-multiples/

  • 05:41 Math Patterns Example 2 | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    Math Patterns Example 2 | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

    309 views / 0 likes - added

    We continue to strengthen our skill in identifying patterns. This time we'll use a table to track the pattern. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/exercise/math-patterns?utm_source=YT&utm_medium=Desc&utm

  • 03:21 Introduction To Perimeter | Measurement | Pre-Algebra | Khan Academy

    Introduction To Perimeter | Measurement | Pre-Algebra | Khan Academy

    248 views / 0 likes - added

    Find perimeter by adding side-lengths of various figures. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/measurement/perimeter/e/perimeter_1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Wa

  • 08:13 Prime Numbers | Factors And Multiples | Pre-Algebra | Khan Academy

    Prime Numbers | Factors And Multiples | Pre-Algebra | Khan Academy

    310 views / 0 likes - added

    What does it mean to be a prime number? Let's progress though some whole numbers and ask ourselves if they meet the criteria. What is the criteria you ask? Watch. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math

  • 09:45 Simplifying Radicals | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

    Simplifying Radicals | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

    361 views / 1 likes - added

    Using exponent rules to simplify radicals or square roots Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/radical-radicals/e/simplifying_radicals?utm_source=YT&utm_medium=Desc&utm

  • 06:17 Solving Percent Problems | Decimals | Pre-Algebra | Khan Academy

    Solving Percent Problems | Decimals | Pre-Algebra | Khan Academy

    316 views / 0 likes - added

    We'll use algebra to solve this percent problem. Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-word-probs-pre-alg/v/solving-percent-problems-2?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the

  • 05:34 Multiplying Positive And Negative Numbers | Pre-Algebra | Khan Academy

    Multiplying Positive And Negative Numbers | Pre-Algebra | Khan Academy

    290 views / 0 likes - added

    Learn some rules of thumb for multiplying positive and negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/absolute-value/mult_div_negatives/e/multiplying_and_dividing_negative_numbers?

  • 05:20 Order Of Operations: PEMDAS | Arithmetic Properties | Pre-Algebra | Khan Academy

    Order Of Operations: PEMDAS | Arithmetic Properties | Pre-Algebra | Khan Academy

    298 views / 0 likes - added

    Work through another challenging order of operations example with only positive numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/order-of-operations/order_of_operations/e/order_of_operations

  • 05:51 Equivalent Fractions | Fractions | Pre-Algebra | Khan Academy

    Equivalent Fractions | Fractions | Pre-Algebra | Khan Academy

    344 views / 0 likes - added

    Introduces the concept of equivalent fractions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/equivalent-fractions-pre-alg/e/equivalent_fractions?utm_source=YT&utm_medium=Desc&utm

  • 20:48 Introduction To Scientific Notation | Pre-Algebra | Khan Academy

    Introduction To Scientific Notation | Pre-Algebra | Khan Academy

    369 views / 0 likes - added

    Introduction to scientific notation. An in-depth discussion about why and how scientific notation is used. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/scientific-notation/e/sc

  • 14:13 Introduction To Ratios | Ratios, Proportions, Units, And Rates | Pre-Algebra | Khan Academy

    Introduction To Ratios | Ratios, Proportions, Units, And Rates | Pre-Algebra | Khan Academy

    392 views / 0 likes - added

    What a ratio is. Simple ratio problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/ratio_word_problems?utm_source=YT&utm_medium=Desc&utm_campaign=PreAl

  • 04:20 Dividing A Whole Number By A Decimal | Decimals | Pre-Algebra | Khan Academy

    Dividing A Whole Number By A Decimal | Decimals | Pre-Algebra | Khan Academy

    339 views / 1 likes - added

    When dividing a whole number by a decimal, you're going to need to change that decimal into a whole number. How? We'll show you. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/divi

  • 07:14 Negative Exponents | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

    Negative Exponents | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

    351 views / 0 likes - added

    How does a negative exponent affect our answer? Before you assume that the answer must be negative, think again! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/negative-exponents

  • 04:07 Adding And Subtracting Negative Numbers | Pre-Algebra | Khan Academy

    Adding And Subtracting Negative Numbers | Pre-Algebra | Khan Academy

    327 views / 0 likes - added

    Learn how to add and subtract negative numbers. The problems solved in this video are 2 - 3 = -1 and -2 - 3 = -5 and -2 + 3 = 1 and 2 - (-3) = 5 and -2 - (-3). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pr

  • 03:33 Finding A Percentage | Decimals | Pre-Algebra | Khan Academy

    Finding A Percentage | Decimals | Pre-Algebra | Khan Academy

    331 views / 0 likes - added

    Once again, fractions are our friends as we use them to find a percentage. You'll also see a couple of different ways to arrive at the answer. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimal

  • 05:42 Understanding Division Of Fractions | Fractions | Pre-Algebra | Khan Academy

    Understanding Division Of Fractions | Fractions | Pre-Algebra | Khan Academy

    320 views / 0 likes - added

    Using a number line, we'll explain the rule of "invert and multiply" when dividing two fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/div-fractions-fractions-pre-alg/e/

  • 04:24 Example Of Subtracting Fractions With Unlike Denominators | Fractions | Pre-Algebra | Khan Academy

    Example Of Subtracting Fractions With Unlike Denominators | Fractions | Pre-Algebra | Khan Academy

    331 views / 0 likes - added

    If you conquered adding fractions with different denominators, then subtracting fractions will be a snap. Don't worry...we'll take it slow and explain every step. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math

  • 09:23 Converting Fractions To Decimals | Decimals | Pre-Algebra | Khan Academy

    Converting Fractions To Decimals | Decimals | Pre-Algebra | Khan Academy

    369 views / 1 likes - added

    How to express a fraction as a decimal Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/decimal-to-fraction-pre-alg/e/converting_fractions_to_decimals?utm_source=YT&utm_medium=Desc&u

  • 07:08 Early Train Word Problem | Linear Equations | Algebra I | Khan Academy

    Early Train Word Problem | Linear Equations | Algebra I | Khan Academy

    324 views / 0 likes - added

    Fun word problem that is almost a brain teaser. Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/v/patterns-in-sequences-1?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI

  • 13:21 Basic Multiplication | Multiplication And Division | Arithmetic | Khan Academy

    Basic Multiplication | Multiplication And Division | Arithmetic | Khan Academy

    449 views / 1 likes - added

    Introduction to multiplication Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/multiplication-division/multiplication_fun/e/multiplication_0.5?utm_source=YT&utm_medium=Desc&utm_campaign=Arithmetic Wa

  • 02:05 Skip Counting By 5 Example | Addition And Subtraction Within 100 | Early Math | Khan Academy

    Skip Counting By 5 Example | Addition And Subtraction Within 100 | Early Math | Khan Academy

    317 views / 0 likes - added

    Learn to count by fives. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-skip-counting/e/skip-counting-by-5s?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMa

  • 04:11 Popular Subtracting Ten Or One Hundred | Addition And Subtraction Within 100 | Early Math | Khan Academy

    Subtracting Ten Or One Hundred | Addition And Subtraction Within 100 | Early Math | Khan Academy

    812 views / 0 likes - added

    Learn how to subtract 1, 10, or 100 from a number. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-sub-ones-tens-hundreds/e/subtract-within-1000--level-1?utm_s

  • 02:49 Skip Counting By 100 Example | Addition And Subtraction Within 100 | Early Math | Khan Academy

    Skip Counting By 100 Example | Addition And Subtraction Within 100 | Early Math | Khan Academy

    341 views / 0 likes - added

    Learn to count by hundreds. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-skip-counting/e/skip-counting-by-100s?utm_source=YT&utm_medium=Desc&utm_campaign=Ea

  • 03:37 Adding Hundreds, Tens, And Ones | Addition And Subtraction Within 100 | Early Math | Khan Academy

    Adding Hundreds, Tens, And Ones | Addition And Subtraction Within 100 | Early Math | Khan Academy

    365 views / 0 likes - added

    Learn how to add three-digit numbers by adding ones, tens, and hundreds. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-ones-tens-hundreds/e/add-within-10

  • 02:55 Place Value Example With 25 | Place Value (tens And Hundreds) | Early Math | Khan Academy

    Place Value Example With 25 | Place Value (tens And Hundreds) | Early Math | Khan Academy

    318 views / 0 likes - added

    Learn to see 25 as 2 tens and 5 ones. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-place-value-topic/cc-early-math-tens/e/groups-of-tens?utm_source=YT&utm_medium=Desc&utm_campaign=Ea

  • 01:44 Interpreting Two-way Tables | Data And Modeling | 8th Grade | Khan Academy

    Interpreting Two-way Tables | Data And Modeling | 8th Grade | Khan Academy

    309 views / 0 likes - added

    Learn how to read two-way tables. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-counting/v/counting-with-small-numbers?utm_source=YT&utm_medium=Desc&utm_c

  • 03:00 Teens As Sums With 10 | Place Value (tens And Hundreds) | Early Math | Khan Academy

    Teens As Sums With 10 | Place Value (tens And Hundreds) | Early Math | Khan Academy

    319 views / 0 likes - added

    Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-place-value-topic/cc-early-math-teens/e/teen-numbers-1?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch the next lesson: https:

  • 07:43 Basic Addition | Addition And Subtraction | Arithmetic | Khan Academy

    Basic Addition | Addition And Subtraction | Arithmetic | Khan Academy

    372 views / 1 likes - added

    Introduction to addition. Multiple visual ways to represent addition. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/addition-subtraction/basic_addition/e/addition_1?utm_source=YT&utm_medium=Desc&ut

  • 03:36 Addition Using Groups Of 10 Intro | Addition And Subtraction Within 100 | Early Math | Khan Academy

    Addition Using Groups Of 10 Intro | Addition And Subtraction Within 100 | Early Math | Khan Academy

    289 views / 0 likes - added

    Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-making-groups-of-ten/e/making-100?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch the next lesson: h

  • 02:36 Counting By Tens Examples | Addition And Subtraction Within 100 | Early Math | Khan Academy

    Counting By Tens Examples | Addition And Subtraction Within 100 | Early Math | Khan Academy

    321 views / 0 likes - added

    Learn to count by tens. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-skip-counting/e/skip-counting-by-10s?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMa

  • 03:23 Spots On A Die | Addition And Subtraction Within 100 | Early Math | Khan Academy

    Spots On A Die | Addition And Subtraction Within 100 | Early Math | Khan Academy

    313 views / 0 likes - added

    Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-more-fewer-100/e/addition-and-subtraction-word-problems-within-100--level-4?utm_source=YT&utm_medium=Desc&utm_c

  • 04:19 Place Value Example With 42 | Place Value (tens And Hundreds) | Early Math | Khan Academy

    Place Value Example With 42 | Place Value (tens And Hundreds) | Early Math | Khan Academy

    361 views / 0 likes - added

    Learn to see 42 as 4 tens and 2 ones. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-place-value-topic/cc-early-math-tens/e/groups-of-tens?utm_source=YT&utm_medium=Desc&utm_campaign=Ea

  • 04:08 Measuring A Golden Statue | Measurement And Data | Early Math | Khan Academy

    Measuring A Golden Statue | Measurement And Data | Early Math | Khan Academy

    342 views / 0 likes - added

    Measure an object with same-size length units that span it with no gaps or overlaps. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-picture-graphs/e/solving

  • 01:03 Subtraction Word Problems Within 10 | Basic Addition And Subtraction | Early Math | Khan Academy

    Subtraction Word Problems Within 10 | Basic Addition And Subtraction | Early Math | Khan Academy

    336 views / 0 likes - added

    Learn how to solve word problems by subtracting small numbers (numbers 10 or less). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-add-sub-word-problem-wit

  • 02:03 Comparing Numbers Of Objects | Counting | Early Math | Khan Academy

    Comparing Numbers Of Objects | Counting | Early Math | Khan Academy

    337 views / 1 likes - added

    Learn what "more than" and "less than" mean. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-comparing-numbers/e/compare-groups-through-10?utm_source=YT&utm

  • 02:36 Understanding Place Value When Adding Ones | Early Math | Khan Academy

    Understanding Place Value When Adding Ones | Early Math | Khan Academy

    282 views / 0 likes - added

    Learn how to add 37 + 2 by thinking about place value. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-ones-tens/e/add-within-100--level-1?utm_source=YT&ut

  • 03:59 Adding Ten Or One Hundred | Addition And Subtraction Within 100 | Early Math | Khan Academy

    Adding Ten Or One Hundred | Addition And Subtraction Within 100 | Early Math | Khan Academy

    314 views / 1 likes - added

    Learn how to add 1, 10, or 100 to a number. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-ones-tens-hundreds/e/add-within-1000--level-1?utm_source=YT&utm

  • 01:31 Filling Rectangles With Squares | Geometry | Early Math | Khan Academy

    Filling Rectangles With Squares | Geometry | Early Math | Khan Academy

    323 views / 0 likes - added

    Learn how to fill rectangles with squares. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-fractions-of-shapes/e/filling-rectangles-with-same-sized-squares?

  • 01:54 Getting To 10 By Filling Boxes | Basic Addition And Subtraction | Early Math | Khan Academy

    Getting To 10 By Filling Boxes | Basic Addition And Subtraction | Early Math | Khan Academy

    346 views / 0 likes - added

    Learn how to add two numbers to make 10. This video shows two examples: 3 + ___ = 10 and 6 + ___ = 10. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-make-

  • 03:16 Understanding Place Value While Adding Tens | Early Math | Khan Academy

    Understanding Place Value While Adding Tens | Early Math | Khan Academy

    251 views / 0 likes - added

    Learn how to add 23 + 30 by thinking about place value. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-ones-tens/e/add-within-100--level-1?utm_source=YT&u

  • 02:51 Telling Time Exercise Example 1 | Measurement And Data | Early Math | Khan Academy

    Telling Time Exercise Example 1 | Measurement And Data | Early Math | Khan Academy

    292 views / 0 likes - added

    Tell time on a labeled analog clock. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-time/e/telling_time_0.5?utm_source=YT&utm_medium=Desc&utm_campaign=


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