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13:42
Bay of Pigs Invasion
362 views / 1 likes  addedBay of Pigs Invasion More free lessons at: http://www.khanacademy.org/video?v=XmkbAduMD_E

13:49
When Capitalism is Great and Notsogreat
302 views / 0 likes  addedUnderstanding when capitalism can potentially undermine innovation, competition and merit More free lessons at: http://www.khanacademy.org/video?v=8NJEeEUUhaI

16:39
French Invasion of Russia
296 views / 0 likes  addedNapoleon's disastrous invasion of Russia More free lessons at: http://www.khanacademy.org/video?v=F_ySQvjtAxQ

08:56
Comparative Advantage Specialization and Gains from Trade
350 views / 0 likes  addedHow two parties can get better outcomes by specializing in their comparative advantage and trading More free lessons at: http://www.khanacademy.org/video?v=xx9xNJlPOJo

10:16
Comparative Advantage and Absolute Advantage
351 views / 0 likes  addedShowing that a party benefits from trade as long as there is a comparative advantage (and not necessarily an absolute advantage) More free lessons at: http://www.khanacademy.org/video?v=xN3UV5FsBkU

11:49
Fixed, Variable, and Marginal Cost.
293 views / 0 likes  addedThinking about average fixed, variable and marginal cost More free lessons at: http://www.khanacademy.org/video?v=bBQVaRnHqLs

12:07
Visualizing Average Costs and Marginal Costs as Slope
297 views / 0 likes  addedGraphing variable cost, fixed cost and total cost More free lessons at: http://www.khanacademy.org/video?v=k1iHDu9GrJE

09:02
How Many People to Hire Given the MPR curve
376 views / 0 likes  addedThinking about how many people it makes sense to hire. Brief discussion of a monopsony. More free lessons at: http://www.khanacademy.org/video?v=p8PSIpMkEvA

08:47
Phillips Curve
330 views / 0 likes  addedThe observation that inflation and unemployment tend to be inversely correlated More free lessons at: http://www.khanacademy.org/video?v=v7ZWTZ9NgU4

07:34
Money Supply and Demand Impacting Interest Rates
256 views / 0 likes  addedExamples showing how various factors can affect interest rates More free lessons at: http://www.khanacademy.org/video?v=vItRHYuA88

05:09
Using Reserves to Stabilize Currency
362 views / 0 likes  addedHow a central bank could use foreign currency reserves to keep its own currency from devaluing More free lessons at: http://www.khanacademy.org/video?v=TZ7d5kjAlQw

07:41
Math Mechanics of Thai Banking Crisis
375 views / 0 likes  addedGoing through the mechanics of how a Thai financial institution can lose their shirt when their currency devalues. More free lessons at: http://www.khanacademy.org/video?v=9p3HNMeoAI

08:23
Systems of Three Variables
237 views / 0 likes  addedu14_l3_t1_we1 Systems of Three Variables More free lessons at: http://www.khanacademy.org/video?v=pANZpI9sOYg Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

07:01
Systems of Three Variables 2
236 views / 0 likes  addedu14_l3_t1_we2 Systems of Three Variables 2 More free lessons at: http://www.khanacademy.org/video?v=f7cXAr2cEM Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

05:06
Solutions to Three Variable System
268 views / 0 likes  addedu14 l3 t1 we4 Solutions to Three Variable System More free lessons at: http://www.khanacademy.org/video?v=145zOBT0LD4

01:24
Solving for a Variable
247 views / 0 likes  addedu15_l3_t1_we1 Solving for a Variable More free lessons at: http://www.khanacademy.org/video?v=fnuIT7EhAvs Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

05:31
Direct Inverse and Joint Variation
342 views / 0 likes  addedu15_l3_t1_we2 Direct Inverse and Joint Variation More free lessons at: http://www.khanacademy.org/video?v=vk5L0BPOmc Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

01:44
Proportionality Constant for Direct Variation
337 views / 0 likes  addedu15_l3_t1_we3 Proportionality Constant for Direct Variation More free lessons at: http://www.khanacademy.org/video?v=c6FJRda_Vc Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:02
Direct Variation Application
296 views / 0 likes  addedu15_l3_t1_we4 Direct Variation Application More free lessons at: http://www.khanacademy.org/video?v=ZsjfUUJUq9s Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:42
Inverse Variation Application
308 views / 0 likes  addedu15_l3_t1_we5 Inverse Variation Application More free lessons at: http://www.khanacademy.org/video?v=lkPE2LUnjA Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

06:40
Joint Variation Application
330 views / 0 likes  addedu15_l3_t1_we6 Joint Variation Application

04:16
Simplifying Square Roots Comment Response
303 views / 0 likes  addedThinking about the domain of the expression to determine if we need the absolute value sign More free lessons at: http://www.khanacademy.org/video?v=qFFhdLlX220 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:57
Radical Equivalent to Rational Exponents
362 views / 0 likes  addedu16_l1_t3_we1 Radical Equivalent to Rational Exponents More free lessons at: http://www.khanacademy.org/video?v=jO4wOQQiVZg Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:24
Radical Equivalent to Rational Exponents 2
280 views / 0 likes  addedu16_l1_t3_we2 Radical Equivalent to Rational Exponents 2 More free lessons at: http://www.khanacademy.org/video?v=zlRKO21qEpQ Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

05:08
Evaluating Functions
288 views / 0 likes  addedu17_l2_t1_we1 Evaluating Functions More free lessons at: http://www.khanacademy.org/video?v=E9YEUQR9NAU Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

08:55
Blood Sugar Levels
532 views / 0 likes  addedNormal and elevated blood sugar levels before (preprandia) and after (postprandial) a meal More free lessons at: http://www.khanacademy.org/video?v=JSFiOF7xGfE

08:17
Time Value of Money
307 views / 0 likes  addedOverview of the time value, present value and future value of money More free lessons at: http://www.khanacademy.org/video?v=733mgqrzNKs

11:15 Popular
SOPA and PIPA
1,257 views / 0 likes  addedWhat SOPA and PIPA are at face value and what they could end up enabling More free lessons at: http://www.khanacademy.org/video?v=tzqMoOk9NWc

10:08
Earth Formation
489 views / 0 likes  addedHow the Earth is a the byproduct of a local supernova More free lessons at: http://www.khanacademy.org/video?v=VbNXh0GaLYo

11:29
Introduction to Programs Data Types and Variables
500 views / 0 likes  addedWriting a basic program. Basics of data types, variables and conditional statements

03:51
Stock Dilution
262 views / 0 likes  addedWhy the value per share does not really get diluted when more shares are issued in a secondary offering More free lessons at: http://www.khanacademy.org/video?v=tjQzJ7GY0GY

02:57
Fair Value Accounting
291 views / 0 likes  addedDifference between Historical Cost and Fair Value Accounting More free lessons at: http://www.khanacademy.org/video?v=s5_H3zCv0

15:43
Calculus: Derivatives 1 (new HD version)
509 views / 0 likes  addedCalculusDerivative: Understanding that the derivative is just the slope of a curve at a point (or the slope of the tangent line) More free lessons at: http://www.khanacademy.org/video?v=ANyVpMS3HL4

09:24
Stepping Through the Factorial Program
335 views / 0 likes  addedStepping through what happens when a user inputs a particular value into our factorial program

09:12
Diagramming What Happens with a Function Call
341 views / 0 likes  addedVariable scope and function calls

09:11
Introduction to motion
337 views / 0 likes  addedIntroduction to basic physics of motion. Introduces the concept of variable velocity/acceleration.

09:15
Projectile motion (part 2)
267 views / 0 likes  addedA derivation of a new motion equation More free lessons at: http://www.khanacademy.org/video?v=emdHj6WodLw

02:00
Variables and Expressions 1
310 views / 0 likes  addedU09_L1_T1_we1 Variables and Expressions 1 More free lessons at: http://www.khanacademy.org/video?v=AJNDeVt9UOo Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

01:46
Evaluating Expressions with Two Variables
224 views / 0 likes  addedu09_l1_t1_we2 Evaluating Expressions with Two Variables More free lessons at: http://www.khanacademy.org/video?v=BXHNzUaIRR0 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:22
Absolute Value of Integers
264 views / 0 likes  addedU09_L1_T2_we2 Absolute Value of Integers More free lessons at: http://www.khanacademy.org/video?v=r6hS_8nm1jM Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:02
Application problems with equation in one variable
325 views / 0 likes  addedu10_l1_t3_we2 Application problems with equation in one variable More free lessons at: http://www.khanacademy.org/video?v=iimpwYBiKNg Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

01:15
Evaluate a formula using substitution
267 views / 0 likes  addedu10_l1_t4_we1 Evaluate a formula using substitution More free lessons at: http://www.khanacademy.org/video?v=tC1SfxRvtmM Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:29
Rearrange formulas to isolate specific variables
325 views / 0 likes  addedu10_l1_t4_we2 Rearrange formulas to isolate specific variables More free lessons at: http://www.khanacademy.org/video?v=eTSVTTg_QZ4 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:23
Absolute Value Equations Example 1
257 views / 0 likes  addedu10_l3_t2_we1 Absolute Value Equations More free lessons at: http://www.khanacademy.org/video?v=LRlVWC0FMQc Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:39
Absolute Value Inequalities Example 2
244 views / 0 likes  addedu10_l3_t2_we2 Absolute Value Inequalities More free lessons at: http://www.khanacademy.org/video?v=YKQLZOq4HTA Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

01:03
Absolute Value Equations 2
259 views / 0 likes  addedu10_l3_t2_we3 Absolute Value Equations 2

02:42
Evaluating exponential expressions
366 views / 0 likes  addedu11_l1_t1_we1 Evaluating exponential expressions More free lessons at: http://www.khanacademy.org/video?v=0uCslW40VHQ Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:02
Evaluating exponential expressions 2
275 views / 0 likes  addedu11_l1_t1_we2 Evaluating exponential expressions 2 More free lessons at: http://www.khanacademy.org/video?v=NEaLgGi4Vh4 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

01:09
Evaluating a polynomial at a given value
306 views / 0 likes  addedu11_l2_t1_we2 Evaluating a polynomial at a given value More free lessons at: http://www.khanacademy.org/video?v=03yq7XsErqo Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:59
Evaluating an expression with multiple variables
243 views / 0 likes  addedu11_l3_t1_we1 Evaluating an expression with multiple variables

03:06
Simplifying an expression with multiple variables
249 views / 0 likes  addedu11_l3_t1_we2 Simplifying an expression with multiple variables

02:17
Simplifying Multivariable Polynomial
220 views / 0 likes  addedu11 l3 t2 we1 Simplifying Multivariable Polynomial

02:10
Subtracting polynomials with multiple variables
308 views / 0 likes  addedu11_l3_t2_we2 Subtracting polynomials with multiple variables More free lessons at: http://www.khanacademy.org/video?v=AqMT_zB9rP8 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:34
More multiplying polynomials
358 views / 0 likes  addedu11_l3_t2_we3 More multiplying polynomials More free lessons at: http://www.khanacademy.org/video?v=D6mivA_8L8U Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:14
Dividing multivariable polynomial with monomial
402 views / 0 likes  addedu11_l3_t2_we4 Dividing multivariable polynomial with monomial More free lessons at: http://www.khanacademy.org/video?v=Yu00YJ3tAlo Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

09:56
2003 AIME II Problem 9
269 views / 0 likes  addedSum of polynomial evaluated at roots of another polynomial More free lessons at: http://www.khanacademy.org/video?v=ZSESJ8TeGSI

11:54
2003 AIME II Problem 15 (part 1)
377 views / 0 likes  addedFinding the sum of the absolute value of the imaginary parts of the square of the roots of a crazy polynomial More free lessons at: http://www.khanacademy.org/video?v=2eLAEMRrR7Q

11:33
2003 AIME II Problem 15 (part 2)
289 views / 0 likes  addedFinding the sum of the absolute value of the imaginary parts of the square of the roots of a crazy polynomial More free lessons at: http://www.khanacademy.org/video?v=TljVBB7gxbE

09:32
2003 AIME II Problem 15 (part 3)
389 views / 0 likes  addedFinding the sum of the absolute value of the imaginary parts of the square of the roots of a crazy polynomial More free lessons at: http://www.khanacademy.org/video?v=JTpXK2mENH4

06:16
IIT JEE Circle Hyperbola Common Tangent Part 1
508 views / 0 likes  added2010 IIT JEE Paper 1 Problem 45 Circle Hyperbola Common Tan More free lessons at: http://www.khanacademy.org/video?v=MhLfun2Vask

14:25
Vector Triple Product Expansion (very optional)
573 views / 0 likes  addedA shortcut for having to evaluate the cross product of three vectors More free lessons at: http://www.khanacademy.org/video?v=b7JTVLc_aMk

16:39
Radius of Observable Universe
272 views / 0 likes  addedRadius of Observable Universe More free lessons at: http://www.khanacademy.org/video?v=6nVysrZQnOQ

02:15
(Correction) Radius of Observable Universe
282 views / 0 likes  added(Correction) Radius of Observable Universe More free lessons at: http://www.khanacademy.org/video?v=b6VQv76BQDs

08:58
A Universe Smaller than the Observable
260 views / 0 likes  addedA Universe Smaller than the Observable More free lessons at: http://www.khanacademy.org/video?v=0w9R_foNLrg

11:40
Stellar Distance Using Parallax
281 views / 0 likes  addedStellar Distance Using Parallax More free lessons at: http://www.khanacademy.org/video?v=lVadjWOjvV8

11:58
Supernova (Supernovae)
372 views / 0 likes  addedSupernova (Supernovae) More free lessons at: http://www.khanacademy.org/video?v=qOwCpnQsDLM

01:32
Supernova clarification
309 views / 0 likes  addedSupernova clarification More free lessons at: http://www.khanacademy.org/video?v=QMv4kxATfzs

09:23
Cepheid Variables 1
354 views / 0 likes  addedCepheid Variables 1 More free lessons at: http://www.khanacademy.org/video?v=BWsONRDDG4

12:24
Debt Loops Rationale and Effects
403 views / 0 likes  addedPositive and negative effects of China's devaluing of their currency More free lessons at: http://www.khanacademy.org/video?v=XBI7DqttyOQ

06:45
Algebra: Linear Equations 3
246 views / 0 likes  addedLinear equations with multiple variable and constant terms More free lessons at: http://www.khanacademy.org/video?v=ZnGbH2S0Dk

02:25
Place Value 1
333 views / 0 likes  addedU01_L1_T1_we1 Place Value 1 More free lessons at: http://www.khanacademy.org/video?v=jxA8MffVmPs Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:09
Place Value 2
316 views / 0 likes  addedU01_L1_T1_we2 Place Value 2 More free lessons at: http://www.khanacademy.org/video?v=wd4cRAoBOiE Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

05:20
Place Value 3
290 views / 0 likes  addedU01_L1_T1_we3 Place Value 3 More free lessons at: http://www.khanacademy.org/video?v=iK0y39rjBgQ Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:56
The Distributive Property
322 views / 0 likes  addedU01_L4_T2_we1 The Distributive Property More free lessons at: http://www.khanacademy.org/video?v=gl_E6iVAg4 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:11
The Distributive Property 2
370 views / 0 likes  addedU01_L4_T2_we2 The Distributive Property 2 More free lessons at: http://www.khanacademy.org/video?v=BadvaskUDU Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:48
Identifying Fraction Parts
315 views / 0 likes  addedU02_l1_T1_we2 Identifying Fraction Parts More free lessons at: http://www.khanacademy.org/video?v=a_w0_VAo6U Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:51
Equivalent Fractions Example
395 views / 0 likes  addedU02_L1_T4_we1 Equivalent Fractions More free lessons at: http://www.khanacademy.org/video?v=0JW9P_T4P_Y Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:00
Decimal Place Value
340 views / 0 likes  addedU03_L1_T1_we1 Decimal Place Value More free lessons at: http://www.khanacademy.org/video?v=xDqe5U1TXA Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:31
Decimal Place Value 2
302 views / 0 likes  addedU03_L1_T1_we2 Decimal Place Value 2 More free lessons at: http://www.khanacademy.org/video?v=AuD2TX90Cc Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:32
Mulitplyling Decimals 3
292 views / 1 likes  addedU03_L2_T2_we5 Mulitplyling Decimals 3 More free lessons at: http://www.khanacademy.org/video?v=W7dImsrVa0Y Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

01:25
Understanding Proportions
314 views / 0 likes  addedU04_L2_T1_we1 Understanding Proportions More free lessons at: http://www.khanacademy.org/video?v=V3FvaClh6LY Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

06:58
Example of Solving for a Variable
240 views / 0 likes  addedU02_L1_T4_we1 : Example of solving for a variable More free lessons at: http://www.khanacademy.org/video?v=Aig1hkq3OsU Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:41
Solving for a Variable 2
220 views / 0 likes  addedU02_L1_T4_we2 : Solving for a Variable 2 More free lessons at: http://www.khanacademy.org/video?v=BR5yFOt0zao Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:22
Absolute Value 1
246 views / 0 likes  addedContent provided by TheNROCProject.org ©Monterey Institute for Technology and Education More free lessons at: http://www.khanacademy.org/video?v=NvGTCzAfvr0 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

05:39
Absolute Value and Number Lines
314 views / 0 likes  addedAbsolute Value and Number Lines More free lessons at: http://www.khanacademy.org/video?v=frBJEYvyd8 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:37
Absolute Value Equations 1
322 views / 0 likes  addedU02_L2_T2_we1 : Absolute Value Equations 1 More free lessons at: http://www.khanacademy.org/video?v=GwjiR2_7A7Y Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

06:32
Absolute Value Equation Example 2
246 views / 0 likes  addedU02_L2_T2_we2 : Example of solving an absolute value equation More free lessons at: http://www.khanacademy.org/video?v=jaizi_1IB5c Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:39
Direct Variation 1
292 views / 0 likes  addedU03_L2_T3_we1 : Direct Variation 1 More free lessons at: http://www.khanacademy.org/video?v=rSadG6EtJmY Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:40
Slope of a line
348 views / 0 likes  addedU04_L1_T1_we1 : Slope of a line More free lessons at: http://www.khanacademy.org/video?v=R948Tsyq4vA Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:27
Absolute value inequalities Example 1
265 views / 0 likes  addedU05_L1_T2_we1 : Absolute value inequalities More free lessons at: http://www.khanacademy.org/video?v=TvUCe6Bomy4 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:35
Absolute value inequalities example 3
265 views / 0 likes  addedU05_L1_T2_we3 : Absolute value inequalities 3 More free lessons at: http://www.khanacademy.org/video?v=y9MGpOGQVqQ Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:15
Solving and graphing linear inequalities in two variables 1
279 views / 0 likes  addedU05_L2_T1_we1 : Solving and graphing linear inequalities in two variables More free lessons at: http://www.khanacademy.org/video?v=EoCeL4SPIcA Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:42
Graphing linear inequalities in two variables 2 (old and redone in newer video)
246 views / 0 likes  addedU05_L2_T1_we2 : Graphing linear inequalities in two variables

03:20
Graphing linear inequalities in two variables 3
261 views / 0 likes  addedU05_L2_T1_we3 : Graphing linear inequalities in two variables More free lessons at: http://www.khanacademy.org/video?v=YBYu5aZPLeg Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

01:47
U02_L2_T2_we1 Absolute Value Equations.avi
224 views / 0 likes  addedU02_L2_T2_we1 Absolute Value Equations.avi More free lessons at: http://www.khanacademy.org/video?v=ZEml96_kyN4 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:03
Graphing Linear Inequalities in Two Variables Example 2
231 views / 0 likes  addedU05_L2_T1_WE2 Graphing Linear Inequalities in Two Variables More free lessons at: http://www.khanacademy.org/video?v=FnrqBgot3jM Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

12:27
Variable Expressions
265 views / 0 likes  addedMore free lessons at: http://www.khanacademy.org/video?v=aoXUWSwiDzE

09:28
Equations with Variables on Both Sides
313 views / 0 likes  addedEquations with Variables on Both Sides More free lessons at: http://www.khanacademy.org/video?v=xMsG9hvqzbY

11:11
Direct Variation Models
306 views / 0 likes  addedDirect Variation Models More free lessons at: http://www.khanacademy.org/video?v=9MB5qU7ezY

10:41
Absolute Value Equations
257 views / 0 likes  addedAbsolute Value Equations More free lessons at: http://www.khanacademy.org/video?v=u6zDpUL5RkU

13:13
Absolute Value Inequalities
266 views / 0 likes  addedAbsolute Value Inequalities More free lessons at: http://www.khanacademy.org/video?v=iI_2Piwn_og

12:44
Solving Systems of Equations by Elimination
405 views / 0 likes  addedSolving Systems of Equations by Elimination More free lessons at: http://www.khanacademy.org/video?v=vA55wZtLeE

12:34
Range, Variance and Standard Deviation as Measures of Dispersion
441 views / 0 likes  addedRange, Variance and Standard Deviation as Measures of Dispersion More free lessons at: http://www.khanacademy.org/video?v=E4HAYd0QnRc

17:39
Introduction to Evolution and Natural Selection
305 views / 0 likes  addedIntroduction to evolution, variation in a population and natural selection More free lessons at: http://www.khanacademy.org/video?v=GcjgWov7mTM

19:52
Variation in a Species
373 views / 0 likes  addedHow variation can be introduced into a species. More free lessons at: http://www.khanacademy.org/video?v=DuArVnT1iE

21:04
Parts of a cell
288 views / 1 likes  addedParts of a cell: nucleus, ribosomes, endoplasmic reticulum, Golgi bodies, mitochondria, chloroplasts, vacuoles, and vesicles

06:48
Correction to Sodium and Potassium Pump Video
379 views / 0 likes  addedCorrection to Sodium and Potassium Pump Video More free lessons at: http://www.khanacademy.org/video?v=ye3rTjLCvAU

14:13
B Lymphocytes (B cells)
314 views / 0 likes  addedOverview of B cells (B lymphocytes) and how they are activated and produce antibodies More free lessons at: http://www.khanacademy.org/video?v=Z36dUduOk1Y

20:34
Helper T Cells
314 views / 0 likes  addedIntroduction to helper T cells and their role in activating B cells More free lessons at: http://www.khanacademy.org/video?v=uwMYpTYsNZM

10:07
Cytotoxic T Cells
323 views / 0 likes  addedHow cytotoxic T cells get activated by MHCI/antigen complexes and then proceed to kill infected cells More free lessons at: http://www.khanacademy.org/video?v=oqI4skjr6lQ

15:23
Valence Electrons
216 views / 0 likes  addedLooking at valence electrons to figure out reactivity More free lessons at: http://www.khanacademy.org/video?v=1TZA171yxY4

13:22
Ionic, Covalent, and Metallic Bonds
333 views / 0 likes  addedIntroduction to ionic, covalent, polar covalent and metallic bonds. More free lessons at: http://www.khanacademy.org/video?v=CGA8sRwqIFg

15:09
Partial Pressure
255 views / 0 likes  addedFiguring out the partial pressures of various gases in a container. More free lessons at: http://www.khanacademy.org/video?v=d4bqNf37mBY

14:49
Specific Heat, Heat of Fusion and Vaporization
336 views / 0 likes  addedSpecifict heat and phase changes: Calculating how much heat is needed to convert 200g of ice at 10C to 110 degree steam. More free lessons at: http://www.khanacademy.org/video?v=zz4KbvF_X0

11:39
Van Der Waals Forces
428 views / 0 likes  addedVan Der Waals Forces: London Dispersion Forces, Dipole Attractions, and Hydrogen Bonds. More free lessons at: http://www.khanacademy.org/video?v=8qfzpJvsp04

09:14
Covalent Networks, Metallic, and Ionic Crystals
333 views / 1 likes  addedCovalent Networks, Metallic, and Ionic Crystals: Some of the strongest molecular structures. More free lessons at: http://www.khanacademy.org/video?v=Rw_pDVbnfQk

18:04
Vapor Pressure
418 views / 0 likes  addedVapor Pressure, Volatility, and Evaporation More free lessons at: http://www.khanacademy.org/video?v=hA5jddDYcyg

14:00
Boiling Point Elevation and Freezing Point Supression
296 views / 0 likes  addedRaising or lowering the boiling or freezing point of a solution by adding solute. More free lessons at: http://www.khanacademy.org/video?v=z9LxdqYntlU

15:27
Introduction to Kinetics
256 views / 0 likes  addedKinetics, activation energy, activated complex and catalysts. More free lessons at: http://www.khanacademy.org/video?v=__zyoOLPug

15:50
Keq derivation intuition (can skip; bit mathy)
282 views / 0 likes  addedA more concrete attempt at showing how the probabilities of molecules reacting is related to their concentration. More free lessons at: http://www.khanacademy.org/video?v=psLX080RQR8

12:17
Strong Acid Titration
288 views / 0 likes  addedStrong acid titration and equivalence point More free lessons at: http://www.khanacademy.org/video?v=299o6cFkz4

10:24
Weak Acid Titration
247 views / 0 likes  addedEquivalence point when titrating a weak acid More free lessons at: http://www.khanacademy.org/video?v=gbpc_JBG1F0

15:38
Proof: S (or Entropy) is a valid state variable
299 views / 0 likes  addedPrroof that S (or entropy) is a valid state variable. More free lessons at: http://www.khanacademy.org/video?v=sPz5RrFus1Q

16:02
Vapor Pressure Example
287 views / 0 likes  addedVapor pressure example using the Ideal Gas Law More free lessons at: http://www.khanacademy.org/video?v=QpkmwIoMaY

07:38
Change of State Example
268 views / 0 likes  addedSpecific Heat Capacity and Enthalpy of Vaporization example More free lessons at: http://www.khanacademy.org/video?v=tvO0358YUYM

10:31
ROA Discussion 1
236 views / 0 likes  addedA discussion of the various ways to measure return on assets More free lessons at: http://www.khanacademy.org/video?v=Oh4H3BJX1ZI

17:29
Enterprise Value
232 views / 0 likes  addedSolving the P/E conundrum by looking at a different valuation metric (enterprise value) More free lessons at: http://www.khanacademy.org/video?v=pa92UdJCaos

14:07
EBITDA
238 views / 0 likes  addedReview of Enterprise Value and comparing it to EBITDA More free lessons at: http://www.khanacademy.org/video?v=v4Fq9LEspzw

15:30
CPI Index
399 views / 0 likes  addedDiscussion of inflation, the CPI index and owners' equivalent rent. More free lessons at: http://www.khanacademy.org/video?v=pRIELoITIHI

14:01
Geithner Plan IV
332 views / 0 likes  addedQuantifying the value of the put option More free lessons at: http://www.khanacademy.org/video?v=ajl1UdtYUCA

12:23
Statistics: Variance of a Population
308 views / 0 likes  addedVariance of a population. More free lessons at: http://www.khanacademy.org/video?v=6JFzI1DDyyk

11:18
Statistics: Sample Variance
307 views / 0 likes  addedUsing the variance of a sample to estimate the variance of a population More free lessons at: http://www.khanacademy.org/video?v=Qf3RMGXRh8

12:17
Statistics: Alternate Variance Formulas
325 views / 0 likes  addedPlaying with the formula for variance of a population. More free lessons at: http://www.khanacademy.org/video?v=sRVGcYGjUk8

12:04
Introduction to Random Variables
287 views / 0 likes  addedIntroduction to random variables and probability distribution functions. More free lessons at: http://www.khanacademy.org/video?v=IYdiKeQ9xEI

10:02
Probability Density Functions
343 views / 0 likes  addedProbability density functions for continuous random variables. More free lessons at: http://www.khanacademy.org/video?v=Fvi9A_tEmXQ

11:05
Binomial Distribution 2
317 views / 0 likes  addedMore on the binomial distribution More free lessons at: http://www.khanacademy.org/video?v=FI8xtVaI068

16:56
Expected Value of Binomial Distribution
367 views / 0 likes  addedExpected value of a binomial distributed random variable More free lessons at: http://www.khanacademy.org/video?v=SqcxYnNlI3Y

12:42
Poisson Process 2
269 views / 0 likes  addedMore of the derivation of the Poisson Distribution. More free lessons at: http://www.khanacademy.org/video?v=Jkr4FSrNEVY

08:20
Mean and Variance of Bernoulli Distribution Example
418 views / 0 likes  addedMean and Variance of Bernoulli Distribution Example More free lessons at: http://www.khanacademy.org/video?v=O8vB1eInP_8

06:59
Bernoulli Distribution Mean and Variance Formulas
450 views / 0 likes  addedBernoulli Distribution Mean and Variance Formulas More free lessons at: http://www.khanacademy.org/video?v=ry81_iSHt6E

15:03
Margin of Error 1
408 views / 0 likes  addedFinding the 95% confidence interval for the proportion of a population voting for a candidate. More free lessons at: http://www.khanacademy.org/video?v=OwPSuHXmiPw

10:05
Margin of Error 2
341 views / 0 likes  addedFinding the 95% confidence interval for the proportion of a population voting for a candidate. More free lessons at: http://www.khanacademy.org/video?v=YclQE2XtaLw

18:36
Confidence Interval Example
371 views / 0 likes  addedConfidence Interval Example More free lessons at: http://www.khanacademy.org/video?v=SeQeYVJZ2gE

11:11
Small Sample Size Confidence Intervals
499 views / 0 likes  addedConstructing small sample size confidence intervals using tdistributions More free lessons at: http://www.khanacademy.org/video?v=K4KDLWENXm0

11:27
Hypothesis Testing and Pvalues
347 views / 0 likes  addedHypothesis Testing and Pvalues More free lessons at: http://www.khanacademy.org/video?v=FtlH4svqx4

11:47
TStatistic Confidence Interval
432 views / 0 likes  addedTStatistic Confidence Interval (for small sample sizes) More free lessons at: http://www.khanacademy.org/video?v=hV4pdjHCKuA

10:47
Variance of Differences of Random Variables
533 views / 0 likes  addedVariance of Differences of Random Variables More free lessons at: http://www.khanacademy.org/video?v=rLdoKZ7w0xI

15:49
Confidence Interval of Difference of Means
526 views / 0 likes  addedConfidence Interval of Difference of Means More free lessons at: http://www.khanacademy.org/video?v=hxZ6uooEJOk

02:42
Clarification of Confidence Interval of Difference of Means
473 views / 0 likes  addedClarification of Confidence Interval of Difference of Means More free lessons at: http://www.khanacademy.org/video?v=yQsCMnz9wO8

15:08
Covariance and the Regression Line
362 views / 0 likes  addedCovariance, Variance and the Slope of the Regression Line More free lessons at: http://www.khanacademy.org/video?v=ualmyZiPs9w

07:39
ANOVA 1  Calculating SST (Total Sum of Squares)
449 views / 0 likes  addedAnalysis of Variance 1  Calculating SST (Total Sum of Squares) More free lessons at: http://www.khanacademy.org/video?v=EFdlFoHI_0I

13:20
ANOVA 2  Calculating SSW and SSB (Total Sum of Squares Within and Between).avi
492 views / 0 likes  addedAnalysis of Variance 2  Calculating SSW and SSB (Total Sum of Squares Within and Between).avi More free lessons at: http://www.khanacademy.org/video?v=j9ZPMlVHJVs

10:14
ANOVA 3 Hypothesis Test with FStatistic
376 views / 0 likes  addedAnalysis of Variance 3 Hypothesis Test with FStatistic More free lessons at: http://www.khanacademy.org/video?v=Xg8_iSkJpAE

12:02
Raising money for a startup
370 views / 0 likes  addedRaising money from an angel investor. Premoney and postmoney valuation. More free lessons at: http://www.khanacademy.org/video?v=8OCjwBkMJ_E

11:47
More on IPOs
305 views / 0 likes  addedPublic vs. Private Equity. Why people buy equity to begin with. More free lessons at: http://www.khanacademy.org/video?v=opEy6iN9kqc

10:52
Bailout 2: Book Value
409 views / 0 likes  addedHypothetical bank balance sheet. What book value means. More free lessons at: http://www.khanacademy.org/video?v=YJBqGM29_64

10:33
Bailout 3: Book value vs. market value
431 views / 0 likes  addedWhat it means when the market value of a stock is different from its book value. More free lessons at: http://www.khanacademy.org/video?v=TUOQZjotyAQ

11:50
Banking 1
408 views / 0 likes  addedIntroduction to how banks make money and the value they (potentially) add to society. More free lessons at: http://www.khanacademy.org/video?v=EHOz8T6tAo

14:08
Banking 18: Big Picture Discussion
359 views / 0 likes  addedPros and Cons of various banking systems. More on gold. More free lessons at: http://www.khanacademy.org/video?v=T9byZBGtGuw

09:54
Exact Equations Intuition 1 (proofy)
455 views / 0 likes  addedChain rule using partial derivatives (not a proof; more intuition). More free lessons at: http://www.khanacademy.org/video?v=iEpqcdaJNTQ

05:55
Undetermined Coefficients 4
308 views / 0 likes  addedPutting it all together! More free lessons at: http://www.khanacademy.org/video?v=vAepSNDLZRM

12:14
Using the Convolution Theorem to Solve an Initial Value Prob
344 views / 0 likes  addedUsing the Convolution Theorem to solve an initial value problem More free lessons at: http://www.khanacademy.org/video?v=rfyq32mHcYs

08:02
3variable linear equations (part 1)
426 views / 0 likes  addedVisual intuition of a 3variable linear equation.

13:53
Defining a plane in R3 with a point and normal vector
436 views / 0 likes  addedDetermining the equation for a plane in R3 using a point on the plane and a normal vector More free lessons at: http://www.khanacademy.org/video?v=UJxgcVaNTqY

10:23
Introduction to the Null Space of a Matrix
389 views / 0 likes  addedShowing that the Null Space of a Matrix is a valid Subspace More free lessons at: http://www.khanacademy.org/video?v=jCwRV1QL_Xs

16:31
Compositions of Linear Transformations 2
414 views / 0 likes  addedProviding the motivation for definition of matrix products More free lessons at: http://www.khanacademy.org/video?v=BuqcKpe5ZQs

15:32
Linear Algebra: Least Squares Approximation
400 views / 0 likes  addedThe least squares approximation for otherwise unsolvable equations More free lessons at: http://www.khanacademy.org/video?v=MC7l96tW8V8

18:50
Linear Algebra: Least Squares Examples
425 views / 0 likes  addedAn example using the least squares solution to an unsolvable system More free lessons at: http://www.khanacademy.org/video?v=8mAZYv5wIcE

07:43
Linear Algebra: Introduction to Eigenvalues and Eigenvectors
424 views / 0 likes  addedWhat eigenvectors and eigenvalues are and why they are interesting More free lessons at: http://www.khanacademy.org/video?v=PhfbEr2btGQ

09:19
Linear Algebra: Proof of formula for determining Eigenvalues
457 views / 0 likes  addedProof of formula for determining Eigenvalues More free lessons at: http://www.khanacademy.org/video?v=rfm0wQObxjk

05:39
Linear Algebra: Example solving for the eigenvalues of a 2x2 matrix
447 views / 0 likes  addedExample solving for the eigenvalues of a 2x2 matrix More free lessons at: http://www.khanacademy.org/video?v=pZ6mMVEE89g

14:08
Linear Algebra: Eigenvalues of a 3x3 matrix
435 views / 0 likes  addedDetermining the eigenvalues of a 3x3 matrix More free lessons at: http://www.khanacademy.org/video?v=11dNghWC4HI

15:31
Singapore Math: Grade 3a, Unit 1 (part 1)
290 views / 0 likes  addedObjectives: Read and write numbers less than 10,000. Relate each 4digit number to its place value.

15:11
Singapore Math: Grade 3a Unit 1 (part 2)
281 views / 0 likes  addedObjectives: Read and write numbers less than 10,000. Relate each digit in a 4digit number to its place value.

13:18
Singapore Math: Grade 3a, Unit 1 (part 3)
391 views / 0 likes  addedObjectives: Read and write numbers less than 10,000. Relate each digit in a 4digit number to its place value. Compare and order numbers within 10,000.

13:07
Singapore Math: Grade 3a, Unit 1 (part 5)
280 views / 0 likes  addedEven more on place value

15:44
Singapore Math: Grade 3a, Unit 1 (part 6)
285 views / 0 likes  addedOrdering numbers using place value

13:06
Singapore Math: Grade 3a, Unit 1 (part 7)
284 views / 0 likes  addedPlace value, ordering numbers, number patterns

15:39
Singapore Math: Grade 3a, Unit 1 (part 8)
278 views / 0 likes  addedMore on number patterns with place value.

17:53
Singapore Math: Grade 3a, Unit 1 (part 9)
310 views / 0 likes  addedMore number patterns with place value

09:57
Singapore Math: Grade 3a Unit 2 (part 3)
279 views / 0 likes  addedA man selling balloons at a carnival.

11:40
Generalizing with Binomial Coefficients (bit advanced)
522 views / 0 likes  addedConceptual understanding of where the formula for binomial coefficients come from More free lessons at: http://www.khanacademy.org/video?v=AOsWph2FNLw

15:12
Launching and Landing on Different Elevations
318 views / 0 likes  addedMore complicated example involving launching and landing at different elevations More free lessons at: http://www.khanacademy.org/video?v=a5QnXi_lZII

11:49
Normal Force in an Elevator
310 views / 0 likes  addedHow the normal force changes when an elevator accelerates More free lessons at: http://www.khanacademy.org/video?v=hoRsHNSrMpc

06:01
Momentum: Ice skater throws a ball
328 views / 0 likes  addedA simple conservation of momentum problem involving an ice skater and a ball More free lessons at: http://www.khanacademy.org/video?v=vPkkCOlGND4

10:36
2dimensional momentum problem
268 views / 0 likes  addedAn example of conservation of momentum in two dimensions. More free lessons at: http://www.khanacademy.org/video?v=CFygKiTB4A

10:07
Conservation of Energy
438 views / 0 likes  addedUsing the law of conservation of energy to see how potential energy is converted into kinetic energy More free lessons at: http://www.khanacademy.org/video?v=kw_4Loo1HR4

10:05
Work/Energy problem with Friction
368 views / 0 likes  addedA conservation of energy problem where all of the energy is not conserved. More free lessons at: http://www.khanacademy.org/video?v=YvacYWgygaA

10:02
Introduction to mechanical advantage
349 views / 0 likes  addedIntroduction to simple machines, mechanical advantage and moments. More free lessons at: http://www.khanacademy.org/video?v=pfzJz5Ij48

06:50
Mechanical Advantage (part 2)
326 views / 0 likes  addedMore on mechanical advantage, levers and moments. More free lessons at: http://www.khanacademy.org/video?v=DiBXxWBrV24

10:35
Mechanical Advantage (part 3)
307 views / 0 likes  addedIntroduction to pulleys and wedges More free lessons at: http://www.khanacademy.org/video?v=vSsK7Rfa3yA

09:13
Unit Vector Notation (part 2)
363 views / 0 likes  addedMore on unit vector notation. Showing that adding the x and y components of two vectors is equivalent to adding the vectors visually using the headtotail method More free lessons at: http://www.khanacademy.org/video?v=595Tiga1gIg

10:12
Conservation of angular momemtum
310 views / 0 likes  addedAngular momentum is constant when there is no net torque. More free lessons at: http://www.khanacademy.org/video?v=s_R8d3isJDA

13:27
Proof (Advanced): Field from infinite plate (part 1)
515 views / 0 likes  addedElectric field generated by a uniformly charged, infinite plate More free lessons at: http://www.khanacademy.org/video?v=prLfVucoxpw

11:29
Proof (Advanced): Field from infinite plate (part 2)
421 views / 0 likes  addedWe see that the infinite, uniformly charged plate generates a constant electric field (independent of the height above the plate) More free lessons at: http://www.khanacademy.org/video?v=TxwE4_dXo8s

09:51
Electric Potential Energy (part 2 involves calculus)
390 views / 0 likes  addedElectric potential energy difference in a varying field More free lessons at: http://www.khanacademy.org/video?v=CqsYCIjSm9A

10:03
Cross product 1
307 views / 0 likes  addedIntroduction to the cross product More free lessons at: http://www.khanacademy.org/video?v=zA0fvwtvgvA

07:31
Viewing g as the value of Earth's Gravitational Field Near the Surface
310 views / 0 likes  addedViewing g as the value of Earth's gravitational field near the surface rather than the acceleration due to gravity near Earth's surface for an object in freefall More free lessons at: http://www.khanacademy.org/video?v=1E3Z_R5AHdg

08:58
Congressional Elections: Crash Course Government and Politics #6
388 views / 0 likes  addedThis week Craig Benzine talks about the importance of elections. But he isn’t going to focus on presidential elections, but instead those of the strongest part of our government: congressional elections. Craig will talk about the frequency of elections in
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