KidzTube
Welcome
Login / Register

Search Results: "Khan Academy"

All   Most Recent   Most Viewed  


  • 13:17 Probability that at least 2 people in a room of 30 share the same birthday | Probability and Statist

    Probability that at least 2 people in a room of 30 share the same birthday | Probability and Statist

    407 views / 0 likes - added

    The probability that at least 2 people in a room of 30 share the same birthday. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/probability-and-combinatorics-topic/probability_combinatorics/e/probab

  • 07:18 Diagramming how a bill becomes a law in the U.S.

    Diagramming how a bill becomes a law in the U.S.

    318 views / 0 likes - added

    Diagramming how a bill becomes a law.

  • 05:42 Examples of null and alternative hypotheses

    Examples of null and alternative hypotheses

    318 views / 0 likes - added

    Examples of null and alternative hypotheses

  • 07:58 p values and significance tests

    p values and significance tests

    286 views / 0 likes - added

    p values, significance levels, null hypotheses, alternative hypotheses, and significance tests

  • 04:45 Estimating p value from simulation

    Estimating p value from simulation

    299 views / 0 likes - added

    Example estimating a p-value based on a simulation to approximate the sample distribution of the sample proportions (assuming the null hypothesis is true).

  • 04:51 Ratios for recipes

    Ratios for recipes

    435 views / 0 likes - added

    Ratios and fractions for cooking recipes.

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

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

    319 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

    399 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

    267 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

    340 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

  • 07:32 Ionic bonds and Coulombs law

    Ionic bonds and Coulombs law

    378 views / 1 likes - added

    Introduction to how the strength of ionic bonds is related to Coulomb's law. Example of using Coulomb's law to explain differences in melting points of ionic compounds.

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

    Calculating internal energy and work example | Chemistry | Khan Academy

    323 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

    313 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

    305 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

    275 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

  • 06:19 AP Chemistry multiple choice sample: Boiling points

    AP Chemistry multiple choice sample: Boiling points

    299 views / 0 likes - added

    Comparing the boiling point of nonane and 2,3,4-trifluoropentane. A sample multiple choice problem from the 2014 AP course description.

  • 06:52 2015 AP chemistry free response 5a

    2015 AP chemistry free response 5a

    276 views / 0 likes - added

    Finding the order of reaction for kinetics of bleaching food coloring. An alternative method of solving 2015 AP Chemistry free response 5a.

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

    pH and pKa relationship for buffers | Chemistry | Khan Academy

    536 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

    284 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

    281 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

  • 10:33 The Middle colonies

    The Middle colonies

    371 views / 1 likes - added

    The Middle colonies consisted of Pennsylvania, New Jersey, New York, and Delaware. Located in the middle of the Atlantic seaboard, their economies combined the industry of the North with the agriculture of the South. They were unusual, however, for their

  • 11:07 Society and religion in the New England colonies

    Society and religion in the New England colonies

    321 views / 0 likes - added

    The New England colonies organized society around the Puritan religion and family farming. In this video, Kim explores New England settlers' reasons for immigrating to North America and their farming and fishing economy.

  • 11:46 Politics and native relations in the New England colonies

    Politics and native relations in the New England colonies

    305 views / 0 likes - added

    Although the New England colonies differed from the Chesapeake colonies in their economies and environments, both regions shared forms of government that were unusually democratic for the time period, as well as a policy of excluding Native Americans from

  • 11:57 The West Indies and the Southern colonies

    The West Indies and the Southern colonies

    378 views / 1 likes - added

    Plantation agriculture, and slave labor, united the British colonies in the West Indies and the southern part of the eastern seaboard. In this video, Kim discusses the sugar islands of the Caribbean and how their reliance on enslaved Africans for labor de

  • 11:27 The History of the Republican Party

    The History of the Republican Party

    367 views / 1 likes - added

    Heading into the 2016 Republican National Convention, we thought it would be a good time to do a quick history of the GOP, from its origins before the Civil War through the elections of Lincoln, Eisenhower and Reagan. And where does that elephant symbol c

  • 02:48 United Kingdom vs Great Britain vs England primer

    United Kingdom vs Great Britain vs England primer

    334 views / 0 likes - added

    A primer on the United Kingom vs Great Britain vs England.

  • 15:54 The History of the Democratic Party

    The History of the Democratic Party

    271 views / 1 likes - added

    This week, as America's attention is focused on the Democratic National Convention in Philadelphia, we bring you a quick overview of the history of the Democratic Party. 200+ years was hard to fit into 16 minutes, but we got most of the highlights, from J

  • 38:29 Khan Academy Live: SAT Reading Class

    Khan Academy Live: SAT Reading Class

    460 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

    338 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

    326 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

    378 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

    510 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

    359 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

  • 04:18 Affect and effect | Frequently confused words | Usage | Grammar

    Affect and effect | Frequently confused words | Usage | Grammar

    346 views / 0 likes - added

    TL;DW: affect's a verb and effect's a noun. But there's a little more to it than that.

  • 06:21 Alliteration, Assonance, and Onomatopoeia | Style | Grammar

    Alliteration, Assonance, and Onomatopoeia | Style | Grammar

    326 views / 0 likes - added

    This video will teach you all about the different ways you can use the sound of words for effect. Alliteration is when you use a bunch of similar consonants in a row; assonance is when you use a bunch of similar vowel sounds in a row; onomatopoeia is basi

  • 07:12 Less versus fewer | Frequently confused words | Usage | Grammar

    Less versus fewer | Frequently confused words | Usage | Grammar

    270 views / 0 likes - added

    How do you know when to use "less" or "fewer" when describing the quantity or amount of things?

  • 03:21 There, their, and they're | Frequently confused words | Usage | Grammar

    There, their, and they're | Frequently confused words | Usage | Grammar

    249 views / 0 likes - added

    This is one of the most frequently-confused trios in the English language. Follow along, and learn to suss out the differences between these three words.

  • 05:43 Under- and overstatement | Style | Grammar

    Under- and overstatement | Style | Grammar

    272 views / 0 likes - added

    This is, bar none, the greatest video Khan Academy has ever made, although I may be slightly overstating that. Learn how to master this style by following along.

  • 06:11 Bare/bear, allowed/aloud, advice/advise, break/brake | Frequently confused words | Usage | Grammar

    Bare/bear, allowed/aloud, advice/advise, break/brake | Frequently confused words | Usage | Grammar

    292 views / 0 likes - added

    Learn to tell the differences between these eight frequently-confused words!

  • 07:58 Irony | Style | Grammar

    Irony | Style | Grammar

    258 views / 0 likes - added

    Irony, puns, and sarcasm are some of the toughest concepts in English. This video attempts to explain all three.

  • 08:14 Popular The scale of formality | Style | Grammar

    The scale of formality | Style | Grammar

    845 views / 0 likes - added

    How formal or informal should you be when you write or speak? Let's dive into that!

  • 03:19 To, two, and too | Frequently confused words | Usage | Grammar

    To, two, and too | Frequently confused words | Usage | Grammar

    246 views / 0 likes - added

    Another troublesome triad, "to", "two", and "too". Let's set these frequently-confused words straight!

  • 05:05 Parallel structure | Syntax | Khan Academy

    Parallel structure | Syntax | Khan Academy

    424 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

    436 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

    531 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

    474 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

    343 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

    279 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

    346 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

    335 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

    293 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

    382 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

    398 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

    546 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

    303 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

    364 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

    287 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

    405 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

    298 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

    431 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

    324 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

    234 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

    343 views / 1 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

    288 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

    308 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

    316 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

    400 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

    291 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

    294 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

    272 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

    336 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

    300 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

    366 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

    482 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

    410 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

    310 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

    334 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

    420 views / 1 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

    302 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

    344 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

    301 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

    332 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

    301 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

    357 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

    304 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

    309 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

    435 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

    309 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

    381 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

    421 views / 1 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

    297 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

    294 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

    421 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

    409 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

    300 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

    297 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

    328 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

    309 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

    459 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

    343 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

    411 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

    338 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

    320 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

    342 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

    290 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

    298 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

    325 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

    318 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

    337 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

    311 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

    348 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

    323 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

    358 views / 1 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

    344 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

    577 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

    402 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

    365 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

    375 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

    339 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

    339 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

    355 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

    368 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

    658 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

  • 07:16 Derivative as a concept

    Derivative as a concept

    422 views / 0 likes - added

    Introduction to the idea of a derivative as instantaneous rate of change or the slope of the tangent line.

  • 04:00 Area of an isosceles triangle

    Area of an isosceles triangle

    419 views / 0 likes - added

    Area of an isosceles triangle

  • 03:48 Pythagorean theorem with right triangle

    Pythagorean theorem with right triangle

    398 views / 0 likes - added

    Pythagorean theorem with right triangle

  • 04:51 Relating circumference and area

    Relating circumference and area

    410 views / 0 likes - added

    Relating circumference and area

  • 03:00 Partial circle area and arc length

    Partial circle area and arc length

    442 views / 0 likes - added

    Partial circle area and arc length

  • 04:35 Surface area word problem example

    Surface area word problem example

    457 views / 0 likes - added

    Surface area word problem example

  • 04:17 How volume changes from changing dimensions

    How volume changes from changing dimensions

    410 views / 0 likes - added

    How volume changes from changing dimensions

  • 03:29 Recognizing common 3D shapes

    Recognizing common 3D shapes

    455 views / 0 likes - added

    Recognizing common 3D shapes

  • 03:09 Triangle missing side example

    Triangle missing side example

    388 views / 0 likes - added

    Triangle missing side example

  • 01:31 Example finding area of triangle

    Example finding area of triangle

    452 views / 0 likes - added

    Example finding area of triangle

  • 01:42 Finding height of a parallelogram

    Finding height of a parallelogram

    453 views / 0 likes - added

    Finding height of a parallelogram

  • 04:32 Rounding to the nearest tenth and hundredth

    Rounding to the nearest tenth and hundredth

    471 views / 0 likes - added

    Rounding to the nearest tenth and hundredth

  • 05:09 Christopher Columbus

    Christopher Columbus

    358 views / 0 likes - added

    Who was Christopher Columbus? In this video, Kim explores Columbus's background, his search for royal patronage, and his first voyage in 1492.

  • 10:18 Consequences of Columbus's voyage on the Tainos and Europe

    Consequences of Columbus's voyage on the Tainos and Europe

    570 views / 0 likes - added

    When Columbus arrived in the Caribbean, he met the Taino people. In this video, Kim explores the consequences of Columbus's voyage for the Taino people, as well as the changes wrought in Europe by Spain's New World exploits.

  • 09:17 Popular The Columbian Exchange

    The Columbian Exchange

    1,105 views / 2 likes - added

    Columbus's voyage connected the Americas, Europe, and Africa in a web of exchange that transformed the environments of the Old World and the New World.

  • 03:41 Example finding distance with Pythagorean theorem

    Example finding distance with Pythagorean theorem

    433 views / 0 likes - added

    Example finding distance with Pythagorean theorem

  • 03:37 Sal teaches Grover about the electoral college

    Sal teaches Grover about the electoral college

    421 views / 0 likes - added

    Sal helps our favorite Sesame Street character understand how we elect the president of the United States. Check out more lessons about American civics on Khan Academy at http://www.khanacademy.org. And vote November 8 if you’re eligible!

    Featured
  • 05:09 Finding Units Of Rate Constant K

    Finding Units Of Rate Constant K

    468 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

  • 07:50 Compound Prepositions | Prepositions | The Parts Of Speech | Grammar

    Compound Prepositions | Prepositions | The Parts Of Speech | Grammar

    331 views / 0 likes - added

    These prepositions are called compound prepositions, or multisyllabic prepositions. Like most prepositions, they have both literal and figurative meanings. David explains. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech

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

    Prepositional Phrases | Prepositions | The Parts Of Speech | Grammar

    362 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

    347 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

    362 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

  • 02:36 Prepositions Of Neither Space Nor Time | Prepositions | The Parts Of Speech | Grammar

    Prepositions Of Neither Space Nor Time | Prepositions | The Parts Of Speech | Grammar

    412 views / 0 likes - added

    Some prepositions describe relationships between people or things. These prepositions don’t include information about time or space. Watch the next lesson: https://www.khanacademy.org/the-preposition/e/common-prepositions Missed the previous lesson? Watch

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

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

    354 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

  • 04:29 Passive Sign Convention

    Passive Sign Convention

    459 views / 0 likes - added

    The sign convention for passive components defines what we mean by positive and negative voltage and current. It helps us get the signs right when we apply Ohm's Law.

  • 05:28 Current Direction

    Current Direction

    295 views / 0 likes - added

    The positive sign for current corresponds to the direction a positive charge would move. In metal wires, current is carried by negatively charged electrons. The positive current arrow points opposite the direction the electrons move. This has been the sig

  • 09:18 Current

    Current

    270 views / 0 likes - added

    Current is the flow of charge. We measure current by counting the amount of charge passing through a boundary in one second.

  • 02:59 Voltage Intuition

    Voltage Intuition

    308 views / 0 likes - added

    Voltage is a cornerstone concept in electricity. We create an intuitive mental image by comparing voltage to gravity.

  • 06:03 Kirchhoff's Current Law

    Kirchhoff's Current Law

    309 views / 0 likes - added

    Kirchhoff's Current Law says the currents flowing into a node must add up to zero.

  • 06:39 Voltage Divider

    Voltage Divider

    328 views / 0 likes - added

    The output voltage is a fixed fraction of the input voltage. The ratio is determined by two resistors.

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

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

    310 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

  • 05:14 Intensifiers And Adverbs Of Degree | Modifiers | The Parts Of Speech

    Intensifiers And Adverbs Of Degree | Modifiers | The Parts Of Speech

    366 views / 0 likes - added

    Words like 'very' and 'slightly' are examples of intensifiers and adverbs of degree. Here's how they work! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/the-modifier/e/intensifiers-and-adver

  • 07:40 Forming The Comparative And Superlative | Modifiers | The Parts Of Speech

    Forming The Comparative And Superlative | Modifiers | The Parts Of Speech

    329 views / 0 likes - added

    Learn how to form and use comparative and superlative modifiers.

  • 05:49 Popular Adjective Order | Modifiers | The Parts Of Speech

    Adjective Order | Modifiers | The Parts Of Speech

    915 views / 1 likes - added

    Learn about the adjective order of Standard American English and your new favorite memory aid: DOSA-SCOMP.

  • 03:23 Relative Adverbs | Modifiers | The Parts Of Speech

    Relative Adverbs | Modifiers | The Parts Of Speech

    443 views / 0 likes - added

    Relative adverbs connect chunks of sentences together. Find out how that works!

  • 04:14 Definite And Indefinite Articles | Modifiers | The Parts Of Speech

    Definite And Indefinite Articles | Modifiers | The Parts Of Speech

    309 views / 0 likes - added

    'A' and 'an' are the indefinite articles of English; 'the' is the definite article. David explains what that means!

  • 02:48 Intro To Articles | Modifiers | The Parts Of Speech

    Intro To Articles | Modifiers | The Parts Of Speech

    299 views / 0 likes - added

    Articles—words like the, a, and an—are special adjectives we use to indicate whether a noun is specific or not specific. David, Khan Academy's resident grammarian, explains.

  • 04:10 Intro To Adverbs | Modifiers | The Parts Of Speech

    Intro To Adverbs | Modifiers | The Parts Of Speech

    290 views / 0 likes - added

    Adverbs are a kind of modifier that you can use to change verbs or adjectives, like 'very' or 'carefully'.

  • 03:32 Introduction To Adjectives | Modifiers | The Parts Of Speech

    Introduction To Adjectives | Modifiers | The Parts Of Speech

    366 views / 0 likes - added

    Adjectives are the words we use to modify nouns. David explains how, with the help of a bear.

  • 04:11 Intro To The Comparative And The Superlative | Modifiers | The Parts Of Speech

    Intro To The Comparative And The Superlative | Modifiers | The Parts Of Speech

    321 views / 0 likes - added

    Find out how to be "happier" or even "the happiest!" David, KA's grammarian-in-chief, explains how to compare nouns using comparative and superlative modifiers.

  • 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

    552 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

  • 03:34 Introduction To Agreement | Verbs | The Parts Of Speech

    Introduction To Agreement | Verbs | The Parts Of Speech

    309 views / 0 likes - added

    When you match up the subject of a sentence with a verb, it's called 'agreement'. Here's how it works! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/e/intro-to-verb-agreement M

  • 11:48 The Scientific Method

    The Scientific Method

    401 views / 0 likes - added

    The scientific method

  • 04:34 Biology Overview

    Biology Overview

    401 views / 0 likes - added

    Biology overview

  • 14:08 Small X Approximation For Large Kc

    Small X Approximation For Large Kc

    498 views / 0 likes - added

    Guidelines and worked examples for using the small x approximation to solve equilibrium problems with large Kc values

  • 09:40 Small X Approximation For Small Kc

    Small X Approximation For Small Kc

    560 views / 0 likes - added

    When the small x approximation is useful for solving equilibrium problems, and an example using the small x approximation when Kc is small

  • 10:44 Buffer Capacity

    Buffer Capacity

    419 views / 0 likes - added

    The definition of buffer capacity, and an example showing why it depends on the absolute concentrations of the conjugate acid and base.

  • 06:52 Least Common Multiples Of Polynomials

    Least Common Multiples Of Polynomials

    501 views / 0 likes - added

    Least common multiples of polynomials

  • 06:31 Proof - Sum of Measures of Angles in a Triangle are 180

    Proof - Sum of Measures of Angles in a Triangle are 180

    499 views / 0 likes - added

    Proof that the sum of the measures of the angles in a triangle are 180

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

    Scientific Notation Examples | Pre-Algebra | Khan Academy

    400 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

    448 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

    450 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

    506 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

    470 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

    535 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

    433 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

    538 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

    381 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

    416 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

    632 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

    555 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

    540 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

    388 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

    499 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

    491 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

    406 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

    505 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

    511 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

    482 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

    503 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

    549 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

    409 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

    388 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

    464 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

    595 views / 1 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

    348 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

    488 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


>> View khan academy web videos



RSS