Search Results: "Ayub Khan"
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02:36
Sesame Street: Chaka Khan Sings about Faces with Elmo and Telly
89 views / 0 likes  addedYour 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
314 views / 0 likes  addedThe story of Salman Amin Khan. The faculty of Khanacademy!

08:26
Conjugate acidbase pairs  Acids and bases  Chemistry  Khan Academy
213 views / 0 likes  addedIntroduction to conjugate acidbase pairs. Definition and examples of conjugate acidbase 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
248 views / 0 likes  addedA 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
169 views / 0 likes  addedIntroduction 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
205 views / 0 likes  addedIntroduction to bond enthalpy, and how to use bond enthalpies to calculate enthalpy of reaction. Watch the next lesson: https://www.khanacademy.org/science/chemistry/thermodynamicschemistry/enthalpychemistrysal/v/2015apchemistryfreeresponse7?utm_s

07:14
Calculating internal energy and work example  Chemistry  Khan Academy
214 views / 0 likes  addedWorked 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/thermodynamicschemistry/internalenergysal/v/specificheatandlatentleatof

05:53
Comparing Q vs K example  Chemical equilibrium  Chemistry  Khan Academy
188 views / 0 likes  addedA 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/acidsandbasestopic/acidsandbases/v/arrheniusdefinitiono

07:33
Ways to get a buffer solution  Chemistry  Khan Academy
173 views / 0 likes  addedDescribes 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 halflife example  Knetics  Chemistry  Khan Academy
169 views / 0 likes  addedExample problem showing how to find the rate constant k from the halflife of a first order reaction. Watch the next lesson: https://www.khanacademy.org/science/chemistry/chemkinetics/copyofkinetics/v/secondorderreactionwithcalculus?utm_source=YT&u

07:50
pH and pKa relationship for buffers  Chemistry  Khan Academy
385 views / 0 likes  addedHow the HendersonHasselbalch 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/acidbaseequilibrium/buffersolutions/v/

06:47
Noble gas configuration
184 views / 0 likes  addedHow 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
182 views / 0 likes  addedA 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
272 views / 0 likes  addedNeed 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
219 views / 0 likes  addedNeed 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 subjectverb agreement and sentence punctuation. This is an edited version of our livestream from March 9, 201

1:10:07
Khan Academy Live: AP Calculus
210 views / 0 likes  addedTaking 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
248 views / 0 likes  addedTaking 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/ushistory/apushistory

48:26
Khan Academy Live: SAT Math
336 views / 0 likes  addedNeed 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
220 views / 0 likes  addedNeed 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 subjectverb agreement and sentence punctuation. Can’t ma

05:05
Parallel structure  Syntax  Khan Academy
236 views / 0 likes  addedParallel 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
226 views / 0 likes  addedA 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
254 views / 0 likes  addedIndependent 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/dependentandindependentclauses Wat

05:57
Phrases and clauses  Syntax  Khan Academy
251 views / 0 likes  addedA 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
218 views / 0 likes  addedA 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/danglingmodifiers/ Watch the ne

04:43
Subject, direct object, and indirect object  Syntax  Khan Academy
178 views / 0 likes  addedA 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
174 views / 0 likes  addedA subject is the noun or pronounbased part of a sentence, and a predicate is the verbbased 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
Runons and comma splices  Syntax  Khan Academy
190 views / 0 likes  addedA runon 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 commaandcoordinatingconjunction. Practice this yourself on

03:48
Recognizing fragments  Syntax  Khan Academy
190 views / 0 likes  addedA 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
Pronounantecedent agreement  Syntax  Khan Academy
203 views / 0 likes  addedAn 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
Subjectverb agreement  Syntax  Khan Academy
235 views / 0 likes  addedAgreement 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/subjectverbagreement Watc

04:14
Compoundcomplex sentences  Syntax  Khan Academy
300 views / 0 likes  addedCompoundcomplex 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/complexandcompoundcom

05:07
Complex sentences  Syntax  Khan Academy
187 views / 0 likes  addedComplex 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/compoundcomple

04:29
Simple and compound sentences  Syntax  Khan Academy
258 views / 0 likes  addedA 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
187 views / 0 likes  addedAn 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
241 views / 0 likes  addedThree 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
167 views / 0 likes  addedA 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
257 views / 0 likes  addedFANBOYS" 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
181 views / 0 likes  addedEllipses 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/miscellaneouspunctuation/e/introd

04:09
Parentheses  Punctuation  Khan Academy
127 views / 0 likes  addedParentheses 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
186 views / 0 likes  addedHyphens 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/miscellaneouspunctuation/e/dashesandhyphens Watch the nex

06:20
Dashes  Punctuation  Khan Academy
186 views / 0 likes  addedDashes 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/miscellaneouspunctuation/e/introductiontothe

03:13
Using quotation marks in titles  Punctuation  Khan Academy
159 views / 0 likes  addedLearn 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/miscellaneouspunctuation/e/italicsunderlinesandquotes/ Watch the next lesson:

04:18
How to use italics and underlines  Punctuation  Khan Academy
204 views / 0 likes  addedLearn 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/miscellaneouspunctuation/e/italicsunderlinesandqu

10:57
BONUS: History of the possessive apostrophe  The Apostrophe  Punctuation  Khan Academy
235 views / 0 likes  addedDavid, 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/theapostrophe/v/bonushistoryoftheap

05:40
BONUS: History of the apostrophe  The Apostrophe  Punctuation  Khan Academy
179 views / 0 likes  addedThe 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/thea

02:31
Choosing between its and it’s  The Apostrophe  Punctuation  Khan Academy
178 views / 1 likes  addedDavid 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/theapostrophe

02:51
Apostrophes and plurals  The Apostrophe  Punctuation  Khan Academy
175 views / 0 likes  addedThere 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
231 views / 0 likes  addedPaige 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/theapostrophe/e/advanvedpluralpossesion Watch

01:51
Possession for words ending in “s”  The Apostrophe  Punctuation  Khan Academy
183 views / 0 likes  addedDo 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/theapostrophe/e/introductiontothepossessivecase Watch the next lesson: https://www.kha

03:45
Introduction to the possessive  The Apostrophe  Punctuation  Khan Academy
209 views / 0 likes  addedApostrophes 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/theapostrophe/e/introductiontothepossessivecase Watch the next lesson: https://www

03:36
Introduction to contractions  The Apostrophe  Punctuation  Khan Academy
269 views / 0 likes  addedApostrophes 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/theapostrophe/e/

04:50
Introduction to the apostrophe  The Apostrophe  Punctuation  Khan Academy
259 views / 0 likes  addedDavid 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/thecomma/e/introductiontotheapostrophe Watch the next lesson: https://www.k

03:43
BONUS: The Oxford comma  Punctuation  Grammar  Khan Academy
199 views / 0 likes  addedDavid 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/thecomma/v/appositivesthecommapunctuationkhanacademy?utm_source=YT&utm

03:00
Appositives  Punctuation  Grammar  Khan Academy
194 views / 0 likes  addedDavid 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/thecomma/e/appositives?utm_source=YT&utm_med

03:00
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/thecomma/e/commasindialogue?utm_so

03:24
More uses for commas  Punctuation  Grammar  Khan Academy
199 views / 0 likes  addedDavid 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/thecomma/v/c

01:51
Punctuating a list  Punctuation  Grammar  Khan Academy
224 views / 0 likes  addedLearn 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/thecomma/e/punctuatinglists?utm_source=YT&utm_medium=

04:35
Commas and introductory elements  Punctuation  Grammar  Khan Academy
193 views / 0 likes  addedIn 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/thecomma/e/commasan

03:19
Commas in space and time  The Comma  Punctuation  Khan Academy
196 views / 0 likes  addedLearn 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/thecomma/e/salutationsvaledictionsdatesandaddresses Watch t

02:18
Salutations and valedictions  Punctuation  Grammar  Khan Academy
181 views / 0 likes  addedDavid 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/thecomma/v/commasinspaceandtimethecommapunctuationkhana

03:59
Meet the Comma  Punctuation  Grammar  Khan Academy
225 views / 0 likes  addedDavid 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/thecomma/

02:52
Three ways to end a sentence  Punctuation  Khan Academy
186 views / 0 likes  addedDavid 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/thecomma/e/threewaystoenda

06:08
Beginning sentences with conjunctions  The parts of speech  Grammar  Khan Academy
203 views / 0 likes  addedIs 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/correlativeconjunctions?utm_source=YT&utm_medium=D

03:12
Correlative conjunctions  The parts of speech  Grammar  Khan Academy
259 views / 0 likes  addedCorrelative 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/correlativeconjuntions?u

05:27
Subordinating conjunctions  The parts of speech  Grammar  Khan Academy
202 views / 0 likes  addedSubordinating 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
236 views / 0 likes  addedCoordinating 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/meettheconjunction?utm_source=YT&utm_me

03:50
Adjectives and commas  Adjectives  Khan Academy
212 views / 0 likes  addedWhen 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/themodifier/e/commas

09:03
BONUS VIDEO  Singular They  The parts of speech  Grammar  Khan Academy
194 views / 0 likes  addedYou 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/themodif

02:55
Emphatic pronouns  The parts of speech  Grammar  Khan Academy
185 views / 0 likes  addedSometimes 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
187 views / 0 likes  addedDavid, 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
255 views / 0 likes  addedThe 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
209 views / 0 likes  addedThere'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
180 views / 0 likes  addedBefore 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
184 views / 0 likes  addedWhen 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/thepronoun/e/relativepronouns?utm_source=YT&utm_medium=Desc&u

05:41
That versus which  The parts of speech  Grammar  Khan Academy
209 views / 0 likes  addedMuch 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
259 views / 0 likes  addedWe 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/thepronoun/

05:10
Reflexive pronouns  The parts of speech  Grammar  Khan Academy
207 views / 0 likes  addedWe 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
272 views / 0 likes  addedWe 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
211 views / 0 likes  addedLet's meet the personal pronouns! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/thepronoun/e/meetthepersonalpronoun?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
200 views / 0 likes  addedPronouns 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/thepronoun/e/theq

04:53
Modal verbs  The parts of speech  Grammar  Khan Academy
219 views / 0 likes  addedThere'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
196 views / 0 likes  addedWe 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
205 views / 0 likes  addedIf 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
218 views / 0 likes  addedIf 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
210 views / 0 likes  addedIf 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
223 views / 0 likes  addedIf 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
201 views / 0 likes  addedSome 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/grammarverbs/e/introtoirregular

03:14
The irregular verb gets taken for a ride  Grammar  Khan Academy
215 views / 0 likes  addedThis 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/grammarverbs

03:11
The vowelshift irregular verb  The parts of speech  Grammar  Khan Academy
203 views / 0 likes  addedThis 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/grammarverbs

01:53
The funky ed irregular verb  The parts of speech  Grammar  Khan Academy
219 views / 0 likes  addedThese 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
233 views / 0 likes  addedWords 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
421 views / 0 likes  addedIn 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
262 views / 0 likes  addedWe'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
228 views / 0 likes  addedWhen 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/grammarverbs/v/linkingverbsthepartsofspeechgrammar?utm_source=YT&utm_medium=Desc&utm_ca

02:00
The past tense  The parts of speech  Grammar  Khan Academy
234 views / 0 likes  addedWhen 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/grammarverbs/v/thefuturetenseverbsthepartsofspeech?utm_source=YT&utm_medium=

02:01
The present tense  The parts of speech  Grammar  Khan Academy
211 views / 0 likes  addedHow do we talk about things that are happening right now? Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammarverbs/v/thepasttenseverbsthepartsofspeech?utm_source=YT&utm_medium=Desc&utm_campaign=grammar Misse

01:46
Introduction to verb tense  The parts of speech  Grammar  Khan Academy
222 views / 0 likes  addedAn 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
232 views / 0 likes  addedLet'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/grammarverbs/e/identifyingverbs?utm_source=YT&utm_medium

04:57
Irregular plural nouns  foreign plurals  The parts of speech  Grammar  Khan Academy
245 views / 0 likes  addedYou 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
373 views / 0 likes  addedKhan 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
304 views / 0 likes  addedHow 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
222 views / 0 likes  addedPrepositional phrases are word chunks that begin with a preposition. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/thepreposition/e/prepositionalphrases/ Missed the previous lesson? https://www.khanacademy.org/thepreposi

05:16
Prepositions Of Time  Prepositions  The Parts Of Speech  Grammar
227 views / 0 likes  addedSome 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/thepreposition/e/prepositionsabouttimeandspace Watch the next lesson:

05:10
Prepositions Of Space  Prepositions  The Parts Of Speech  Grammar
239 views / 0 likes  addedSome 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/thepreposition/e/prepositionsabouttimeandspace Watch the nex

03:49
Meet The Prepositions  Prepositions  The Parts Of Speech  Grammar
230 views / 1 likes  addedPrepositions help show us where things are in space and time. Practice this yourself on Khan Academy right now: http://www.khanacademy.org/thepreposition/e/meetthepreposition Watch the next lesson: https://www.youtube.com/watch?v=96sojEZsKu8 The parts

06:44
BONUS VIDEO  Terminal Prepositions  Prepositions  The Parts Of Speech
212 views / 0 likes  addedIt's totally okay to end sentences with prepositions! David, Khan Academy's grammarianinchief, explains the history and the context behind this longheld 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
375 views / 0 likes  addedDefinition 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  PreAlgebra  Khan Academy
295 views / 0 likes  addedMore scientific notation examples Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/scientificnotation/e/scientific_notation?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra W

02:36
Number Patterns: Seeing Relationships  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
300 views / 0 likes  addedLaying 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/prealgebra/applyin

00:52
Reading Bar Charts: Basic Example  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
276 views / 0 likes  addedLet'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/prealgebra/applyingmathreasoningtopic/

07:34
Hexadecimal Number System  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
336 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/applyingmathreasoningtopic/alternatenumberbases/v/decimaltobinary?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  PreAlgebra  Khan Academy
323 views / 0 likes  addedWord problems force us to put concepts to work using realworld 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  PreAlgebra  Khan Academy
369 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/applyingmathreasoningtopic/alternatenumberbases/v/binarymultiplication?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/

03:36
Approximating Irrational Number Exercise Example  PreAlgebra  Khan Academy
283 views / 0 likes  addedPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/orderofoperations/rationalirrationalnumbers/e/approximatingirrationalnumbers?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the nex

03:00
Inverse Property Of Addition  Arithmetic Properties  PreAlgebra  Khan Academy
361 views / 0 likes  addedThe simple idea that a number plus its negative is 0 Watch the next lesson: https://www.khanacademy.org/math/prealgebra/orderofoperations/arithmetic_properties/v/inversepropertyofmultiplication?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra M

03:43
Converting From Decimal To Hexadecimal Representation  PreAlgebra  Khan Academy
257 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/applyingmathreasoningtopic/alternatenumberbases/v/binaryaddition?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  PreAlgebra  Khan Academy
283 views / 0 likes  addedNeed 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/prealgebra/decimalsprealg/percentintrop

02:35
Dividing Whole Numbers And Fractions: Studying  Fractions  PreAlgebra  Khan Academy
353 views / 0 likes  addedSolve 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/prealgebra/fractionsprealg/dividingfractionsprealg

03:53
Plotting Basic Fractions On The Number Line  Fractions  PreAlgebra  Khan Academy
370 views / 0 likes  addedPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/fractionsprealg/understandingfractionsprealg/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  PreAlgebra  Khan Academy
403 views / 0 likes  addedTo 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  PreAlgebra  Khan Academy
256 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/exponentsradicals/Worldofexponents/v/exponentswarmup?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math/prealgebra/app

06:56
Exponents And Powers Of Zero Patterns  PreAlgebra  Khan Academy
323 views / 0 likes  addedNow 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/prealgebra

09:29
Dividing Decimals With Hundredths Example 3  Decimals  PreAlgebra  Khan Academy
327 views / 0 likes  addedThe 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/prealgebra/decimalsprealg/dividingd

02:27
Inequality Word Problem: One Variable  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
280 views / 0 likes  addedThis 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/prealgebra/applyingmathreasoningto

04:51
Cube Root Of A Nonperfect Cube  PreAlgebra  Khan Academy
331 views / 0 likes  addedPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/cuberoottutorial/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  PreAlgebra  Khan Academy
358 views / 0 likes  addedTo 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/preal

03:52
Converting From Decimal To Binary  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
338 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/applyingmathreasoningtopic/alternatenumberbases/v/largenumberdecimaltobinary?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanaca

04:33
Multiplying Negative And Positive Fractions  Fractions  PreAlgebra  Khan Academy
338 views / 0 likes  addedSee examples of multiplying and dividing fractions with negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/fractionsprealg/multiplyingfractionsprealg/e/multiplying_fractions?utm_

02:32
Dividing Whole Numbers And Fractions: Potpourri  Fractions  PreAlgebra  Khan Academy
337 views / 0 likes  addedSolve 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/prealgebra/fractionsprealg/dividingfractionsprealg

04:31
Number Patterns: Interpreting Relationships  PreAlgebra  Khan Academy
276 views / 0 likes  addedExamining 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/prealgebra/applyingmathreasoningtopic/numberpatterns/e/vis

04:25
Multiplying Challenging Decimals  Decimals  PreAlgebra  Khan Academy
273 views / 0 likes  addedSometimes 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  PreAlgebra  Khan Academy
297 views / 0 likes  addedVolume 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  PreAlgebra  Khan Academy
359 views / 0 likes  addedConverting 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/prealgebra/fractionsprealg/mixednumbersprealg/e/converting_mixed_numb

02:07
Percentage Of A Whole Number  Decimals  PreAlgebra  Khan Academy
236 views / 0 likes  addedWe 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  PreAlgebra  Khan Academy
334 views / 0 likes  addedMultiplying and dividing negative numbers Watch the next lesson: https://www.khanacademy.org/math/arithmetic/absolutevalue/abs_value_tutorial/v/absolutevalueandnumberlines?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous less

09:50
Adding And Subtracting Fractions  Fractions  PreAlgebra  Khan Academy
437 views / 1 likes  addedHow to add and subtract fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/fractionsprealg/fractionsunlikedenomprealg/e/adding_fractions?utm_source=YT&utm_medium=Desc&utm_campaign=PreA

01:34
Solving Ratio Problems With Graph  PreAlgebra  Khan Academy
324 views / 0 likes  addedIn 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/prealgebra/ratesandratios/ratios_and_proportions/e/solvingratioproblemswi

03:50
Introduction To Multiplying Decimals  Decimals  PreAlgebra  Khan Academy
350 views / 0 likes  addedMultiplying 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  PreAlgebra  Khan Academy
263 views / 0 likes  addedCover figures with square units to find their area. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/measurement/areabasics/e/measuringareawithunitsquares?utm_source=YT&utm_medium=Desc&utm_campa

06:55
What Are Variables, Expressions, And Equations?  Introduction To Algebra  Algebra I  Khan Academy
268 views / 0 likes  addedLearn what variables, expressions, and equations really are. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/introductiontoalgebra/feelforequationsandinequalit/e/dependentandindependentvariable

03:40
Multistep Word Problem With Decimals And Subtraction  PreAlgebra  Khan Academy
350 views / 0 likes  addedFirst 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/prealgebra/applyingmathreasoningtopi

03:28
Inequality Word Problems  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
365 views / 0 likes  addedWe'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/prealgebra/applyingmathreasoningtopic/greaterthanlessthan/e/writingnumeric

06:29
Multiplying Decimals: Place Value And Reordering  Decimals  PreAlgebra  Khan Academy
363 views / 0 likes  addedWe 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  PreAlgebra  Khan Academy
233 views / 0 likes  addedWe'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/prealgebra/r

08:34
LCM And GCF Word Problems  Factors And Multiples  PreAlgebra  Khan Academy
342 views / 1 likes  addedHere we have a couple of word problemsone 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  PreAlgebra  Khan Academy
292 views / 0 likes  addedIt'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  PreAlgebra  Khan Academy
258 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/applyingmathreasoningtopic/alternatenumberbases/v/hexadecimalnumbersystem?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  PreAlgebra  Khan Academy
298 views / 0 likes  addedMysterious 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  PreAlgebra  Khan Academy
343 views / 0 likes  addedIntroduction to exponent rules Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/exponentproperties/e/exponent_rules?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the

03:03
Introduction To Exponents  PreAlgebra  Khan Academy
303 views / 0 likes  addedTaking 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  PreAlgebra  Khan Academy
313 views / 0 likes  addedWe'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  PreAlgebra  Khan Academy
350 views / 0 likes  addedAdding and subtracting negative numbers Watch the next lesson: https://www.khanacademy.org/math/prealgebra/negativesabsolutevalueprealg/multdivnegativesprealg/v/multiplyingpositiveandnegativenumbers?utm_source=YT&utm_medium=Desc&utm_campaign=

09:17
Unit Conversion Within The Metric System  PreAlgebra  Khan Academy
290 views / 0 likes  addedMetric unit conversion Watch the next lesson: https://www.khanacademy.org/math/prealgebra/ratesandratios/metricsystemtutorial/v/convertingwithinthemetricsystem?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? http

02:04
Ratio Word Problem: Boys To Girls  PreAlgebra  Khan Academy
283 views / 0 likes  addedIn 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/prealgebra/ratesandratios/ratios_and_proportions/e/rat

03:38
Math Patterns Example 1  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
297 views / 0 likes  addedPart 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/mathpatterns?utm_source=YT&utm_mediu

02:39
Comparing Decimals: Ordering From Least To Greatest  Decimals  PreAlgebra  Khan Academy
336 views / 0 likes  addedThis 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  PreAlgebra  Khan Academy
362 views / 1 likes  addedDon'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/prealgebra/fractionsprealg/multiplyin

01:11
Subtracting Decimals: Example 1  Decimals  PreAlgebra  Khan Academy
301 views / 0 likes  addedSubtracting 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/prealgebra/decimalsprealg/addingdecimalsprealg/e/subtracting

06:14
How To Plot Inequalities On A Number Line  PreAlgebra  Khan Academy
306 views / 0 likes  addedLearn 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/prealgebra/applyingmathreasoningtopic/greaterthanlessthan/e/writin

03:09
Simplifying Square Roots  Exponents, Radicals, And Scientific Notation  PreAlgebra  Khan Academy
405 views / 0 likes  addedPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/radicalradicals/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  PreAlgebra  Khan Academy
261 views / 0 likes  addedHere'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/prealgebra/factorsmultiples/

05:41
Math Patterns Example 2  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
309 views / 0 likes  addedWe 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/mathpatterns?utm_source=YT&utm_medium=Desc&utm

03:21
Introduction To Perimeter  Measurement  PreAlgebra  Khan Academy
248 views / 0 likes  addedFind perimeter by adding sidelengths of various figures. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/measurement/perimeter/e/perimeter_1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Wa

08:13
Prime Numbers  Factors And Multiples  PreAlgebra  Khan Academy
310 views / 0 likes  addedWhat 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  PreAlgebra  Khan Academy
361 views / 1 likes  addedUsing exponent rules to simplify radicals or square roots Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/radicalradicals/e/simplifying_radicals?utm_source=YT&utm_medium=Desc&utm

06:17
Solving Percent Problems  Decimals  PreAlgebra  Khan Academy
316 views / 0 likes  addedWe'll use algebra to solve this percent problem. Watch the next lesson: https://www.khanacademy.org/math/prealgebra/decimalsprealg/percentwordprobsprealg/v/solvingpercentproblems2?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the

05:34
Multiplying Positive And Negative Numbers  PreAlgebra  Khan Academy
290 views / 0 likes  addedLearn 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/absolutevalue/mult_div_negatives/e/multiplying_and_dividing_negative_numbers?

05:20
Order Of Operations: PEMDAS  Arithmetic Properties  PreAlgebra  Khan Academy
298 views / 0 likes  addedWork 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/prealgebra/orderofoperations/order_of_operations/e/order_of_operations

05:51
Equivalent Fractions  Fractions  PreAlgebra  Khan Academy
344 views / 0 likes  addedIntroduces the concept of equivalent fractions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/fractionsprealg/equivalentfractionsprealg/e/equivalent_fractions?utm_source=YT&utm_medium=Desc&utm

20:48
Introduction To Scientific Notation  PreAlgebra  Khan Academy
369 views / 0 likes  addedIntroduction to scientific notation. An indepth discussion about why and how scientific notation is used. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/scientificnotation/e/sc

14:13
Introduction To Ratios  Ratios, Proportions, Units, And Rates  PreAlgebra  Khan Academy
392 views / 0 likes  addedWhat a ratio is. Simple ratio problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/ratesandratios/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  PreAlgebra  Khan Academy
339 views / 1 likes  addedWhen 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/prealgebra/decimalsprealg/divi

07:14
Negative Exponents  Exponents, Radicals, And Scientific Notation  PreAlgebra  Khan Academy
351 views / 0 likes  addedHow 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/prealgebra/exponentsradicals/negativeexponents

04:07
Adding And Subtracting Negative Numbers  PreAlgebra  Khan Academy
327 views / 0 likes  addedLearn 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  PreAlgebra  Khan Academy
331 views / 0 likes  addedOnce 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/prealgebra/decimal

05:42
Understanding Division Of Fractions  Fractions  PreAlgebra  Khan Academy
320 views / 0 likes  addedUsing 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/prealgebra/fractionsprealg/divfractionsfractionsprealg/e/

04:24
Example Of Subtracting Fractions With Unlike Denominators  Fractions  PreAlgebra  Khan Academy
331 views / 0 likes  addedIf 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  PreAlgebra  Khan Academy
369 views / 1 likes  addedHow to express a fraction as a decimal Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/decimalsprealg/decimaltofractionprealg/e/converting_fractions_to_decimals?utm_source=YT&utm_medium=Desc&u

02:04
Comparing Numbers Of Objects  Counting  Early Math  Khan Academy Bangla
310 views / 1 likes  added 
07:08
Early Train Word Problem  Linear Equations  Algebra I  Khan Academy
324 views / 0 likes  addedFun word problem that is almost a brain teaser. Watch the next lesson: https://www.khanacademy.org/math/algebra/solvinglinearequationsandinequalities/Moreequationpractice/v/patternsinsequences1?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI

13:21
Basic Multiplication  Multiplication And Division  Arithmetic  Khan Academy
449 views / 1 likes  addedIntroduction to multiplication Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/multiplicationdivision/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
317 views / 0 likes  addedLearn to count by fives. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathaddsub100/ccearlymathskipcounting/e/skipcountingby5s?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
812 views / 0 likes  addedLearn how to subtract 1, 10, or 100 from a number. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathaddsub100/ccearlymathsubonestenshundreds/e/subtractwithin1000level1?utm_s

02:49
Skip Counting By 100 Example  Addition And Subtraction Within 100  Early Math  Khan Academy
341 views / 0 likes  addedLearn to count by hundreds. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathaddsub100/ccearlymathskipcounting/e/skipcountingby100s?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
365 views / 0 likes  addedLearn how to add threedigit numbers by adding ones, tens, and hundreds. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathaddsub100/ccearlymathaddonestenshundreds/e/addwithin10

02:55
Place Value Example With 25  Place Value (tens And Hundreds)  Early Math  Khan Academy
318 views / 0 likes  addedLearn to see 25 as 2 tens and 5 ones. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathplacevaluetopic/ccearlymathtens/e/groupsoftens?utm_source=YT&utm_medium=Desc&utm_campaign=Ea

01:44
Interpreting Twoway Tables  Data And Modeling  8th Grade  Khan Academy
309 views / 0 likes  addedLearn how to read twoway tables. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathcountingtopic/ccearlymathcounting/v/countingwithsmallnumbers?utm_source=YT&utm_medium=Desc&utm_c

03:00
Teens As Sums With 10  Place Value (tens And Hundreds)  Early Math  Khan Academy
319 views / 0 likes  addedPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathplacevaluetopic/ccearlymathteens/e/teennumbers1?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch the next lesson: https:

07:43
Basic Addition  Addition And Subtraction  Arithmetic  Khan Academy
372 views / 1 likes  addedIntroduction to addition. Multiple visual ways to represent addition. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/additionsubtraction/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
289 views / 0 likes  addedPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathaddsub100/ccearlymathmakinggroupsoften/e/making100?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
321 views / 0 likes  addedLearn to count by tens. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathaddsub100/ccearlymathskipcounting/e/skipcountingby10s?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMa

03:23
Spots On A Die  Addition And Subtraction Within 100  Early Math  Khan Academy
313 views / 0 likes  addedPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathaddsub100/ccearlymathmorefewer100/e/additionandsubtractionwordproblemswithin100level4?utm_source=YT&utm_medium=Desc&utm_c

04:19
Place Value Example With 42  Place Value (tens And Hundreds)  Early Math  Khan Academy
361 views / 0 likes  addedLearn to see 42 as 4 tens and 2 ones. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathplacevaluetopic/ccearlymathtens/e/groupsoftens?utm_source=YT&utm_medium=Desc&utm_campaign=Ea

04:08
Measuring A Golden Statue  Measurement And Data  Early Math  Khan Academy
342 views / 0 likes  addedMeasure an object with samesize length units that span it with no gaps or overlaps. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathmeasuredatatopic/ccearlypicturegraphs/e/solving

01:03
Subtraction Word Problems Within 10  Basic Addition And Subtraction  Early Math  Khan Academy
336 views / 0 likes  addedLearn 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/earlymath/ccearlymathaddsubbasics/ccearlymathaddsubwordproblemwit

02:03
Comparing Numbers Of Objects  Counting  Early Math  Khan Academy
337 views / 1 likes  addedLearn what "more than" and "less than" mean. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathcountingtopic/ccearlymathcomparingnumbers/e/comparegroupsthrough10?utm_source=YT&utm

02:36
Understanding Place Value When Adding Ones  Early Math  Khan Academy
282 views / 0 likes  addedLearn how to add 37 + 2 by thinking about place value. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathaddsub100/ccearlymathaddonestens/e/addwithin100level1?utm_source=YT&ut

03:59
Adding Ten Or One Hundred  Addition And Subtraction Within 100  Early Math  Khan Academy
314 views / 1 likes  addedLearn how to add 1, 10, or 100 to a number. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathaddsub100/ccearlymathaddonestenshundreds/e/addwithin1000level1?utm_source=YT&utm

01:31
Filling Rectangles With Squares  Geometry  Early Math  Khan Academy
323 views / 0 likes  addedLearn how to fill rectangles with squares. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathgeometrytopic/ccearlymathfractionsofshapes/e/fillingrectangleswithsamesizedsquares?

01:54
Getting To 10 By Filling Boxes  Basic Addition And Subtraction  Early Math  Khan Academy
346 views / 0 likes  addedLearn 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/earlymath/ccearlymathaddsubbasics/ccearlymathmake

03:16
Understanding Place Value While Adding Tens  Early Math  Khan Academy
251 views / 0 likes  addedLearn how to add 23 + 30 by thinking about place value. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathaddsub100/ccearlymathaddonestens/e/addwithin100level1?utm_source=YT&u

02:51
Telling Time Exercise Example 1  Measurement And Data  Early Math  Khan Academy
292 views / 0 likes  addedTell time on a labeled analog clock. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/earlymath/ccearlymathmeasuredatatopic/ccearlymathtime/e/telling_time_0.5?utm_source=YT&utm_medium=Desc&utm_campaign=
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