Khan Academy
7,713 videos, +5,400,000 subscribers



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Linear velocity comparison from radius and angular velocity5:312,361
Radius from velocity and angular velocity3:591,936
Change in angular velocity when velocity doubles5:161,373
Angular velocity and speed7:301,970
Distance or arc length from angular displacement8:802,110
Angular motion variables5:132,819
Percent from fraction models4:2211,432
The power of 'yet' with Zoe and Elmo from Sesame Street3:3246,057
Khan Academy India Talent Search 20174:2617,229
Ratios for recipes4:5156,404
Ratio word problem examples6:2060,018
Equivalent ratios4:4368,694
Understanding equivalent ratios5:4541,825
Ratio example problems2:5364,163
Dilations and shape properties5:233,430
Happy Mole Day!1:259,651
Liters to milliliters examples2:702,155
Counting by tens example problems1:351,245
Estimating adding and subtracting 3 digit numbers3:2911,163
Associative property of multiplication3:357,417
Khan Academy view of mastery learning8:4210,276
Subtracting multi digit numbers with regrouping3:213,487
Adding multi digit numbers with regrouping2:181,009
Adding multi digit numbers with place value6:22463
Understanding place value when subtracting6:38430
Estimating adding decimals3:3016,096
Estimating subtracting decimals3:286,286
Estimating decimal multiplication3:597,932
Approximating dividing by decimals2:565,298
Estimate multiplying multi digit numbers2:389,508
Approximating multi digit division2:354,877
Rounding decimals on the number line4:22560
Multiplying using area models and the standard algorithm6:5713,957
Evaluating exponent expressions with variables3:1011,987
Comparing exponent expressions2:907,841
Exponents of decimals2:312,195
Identifying transformation described with other algebra and geometry concepts6:25380
Shape properties after a sequence of transformations4:39315
Dilations and properties7:46203
Example identifying the center of dilation2:4386
Dilation scale factor examples4:5998
Dilating points example3:7077
Mapping shapes example2:56528
Properties perserved after rigid transformations7:00422
Finding measures using rigid transformations4:56682
Example reflecting quadrilateral over x axis2:38919
Line of reflection example1:40695
Reflecting points across horizontal and vertical lines3:451,056
Determining angle of rotation2:572,435
Positive and negative rotaion of points example1:503,751
Message to LearnStormers from Paralympic ski racer Josh Sundquist1:494,338
Example translating points3:512,633
Examples recognizing transformations3:471,284
Transformations - dilation1:313,663
TI-84 geometpdf and geometcdf functions5:482,093
When there aren't gains from trade6:503,537
Comparative advantage worked example9:481,616
TI-84 binompdf and binomcdf functions5:272,636
Equilibrium, allocative efficiency and total surplus11:294,495
Visualizing marginal utility MU and total utility TU functions8:101,946
Example breaking down tax incidence5:472,975
How price controls reallocate surplus8:432,341
Proof of expected value of geometric random variable7:193,105
Cumulative geometric probability (less than a value)4:601,845
Cumulative geometric probability (greater than a value)5:301,765
Probability for a geometric random variable2:511,618
Geometric random variables introduction6:152,108
Finding the mean and standard deviation of a binomial random variable5:202,335
Expected value of binomial variable6:332,021
Variance of binomial variable6:512,026
Capital vs. consumer goods and economic growth | Microeconomics | Khan Academy10:401,294
Recognizing binomial variables6:423,487
Binomial variables7:314,040
Comparative advantage - input approach | Basic economic concepts | Microeconomics | Khan Academy5:361,388
Comparative advantage - output approach | Basic economic concepts | Microeconomics | Khan Academy6:601,128
Meet Kim, one of the creators of Khan Academy's AP US History lessons1:584,410
Intuition for why independence matters for variance of sum4:232,070
Variance of sum and difference of random variables8:701,249
Polar curve area with calculator7:121,545
Calculus based justification for an inflection point3:473,651
Related rates example with trigonometry8:102,076
Area between curves example5:253,033
Rate of change of x with respect to theta5:57551
Analyzing logistic differential equation example8:47418
Ordering left and right Riemann sums4:422,388
Left and right Riemann sums as overestimates and underestimates4:101,552
Limits from graphs6:103,747
Growth in population with integral example7:501,840
Definite integrals for area between curves6:505,959
Example describing a distribution5:413,024
Comparing distributions7:181,751
Back-to-school fireside chat with Sal Khan40:2216,835
Displacement from 2 dimensional velocity vector function7:80944
Approximating a limit from a table4:279,296
Calculating position from velocity function2:56522
Example expressing distance traveled with integral2:53348
Displacement and distance with definite integrals8:403,216
Identifying appropriate integral for changes in quantity5:52335
Interpreting definite integral of rate function4:21707
Interpreting definite integral as area under rate curve5:164,435



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