Search Results: ".us"

All Most Recent Most Viewed

18:29 Popular
US History Overview 1: Jamestown to the Civil War

1,095 views / 3 likes - added 9 years ago

Jamestown to the Civil War. Correction: Jamestown was the first successful ENGLISH settlement in what is now the United States. The Spanish actually settled St. Augustine, Florida in 1595. More free lessons at: http://www.khanacademy.org/video?v=ghgPq2wjQ
06:01
Appomattox Court House and Lincoln's Assassination

616 views / 0 likes - added 9 years ago

From Lee's Surrender to Grant to Lincoln's Assassination More free lessons at: http://www.khanacademy.org/video?v=Frpq_A7Ky_Q
14:23 Popular
US History Overview 2 - Reconstruction to the Great Depression

736 views / 0 likes - added 9 years ago

Reconstruction to the Great Depression More free lessons at: http://www.khanacademy.org/video?v=zmBV87XA52Q
14:46
US History Overview 3 - WWII to Vietnam

585 views / 0 likes - added 9 years ago

World War II, Hitler, Cold War, Bay of Pigs, Cuban Missile Crisis and the Space Race More free lessons at: http://www.khanacademy.org/video?v=j2eKaxU-8kA
09:20
Pattern of US Cold War Interventions

648 views / 0 likes - added 9 years ago

Comparing the patterns of Korea, Cuba and Vietnam More free lessons at: http://www.khanacademy.org/video?v=aNkrawaaiZQ
14:21
20th Century Capitalism and Regulation in the United States

591 views / 0 likes - added 9 years ago

Overview of cycles of regulation, de-regulation and government in 20th century US capitalism More free lessons at: http://www.khanacademy.org/video?v=J33nVRyTeyU
27:15
Haitian Revolution (Part 1)

583 views / 0 likes - added 9 years ago

Slaves rebel in Saint-Domingue (Haiti). Rise of Toussaint L'Ouverture. More free lessons at: http://www.khanacademy.org/video?v=Qz5zFzvbib4
16:18
Napoleon and the War of the Fourth Coalition

564 views / 0 likes - added 9 years ago

Napoleon takes on Prussia and Russia and wins again More free lessons at: http://www.khanacademy.org/video?v=O3HxPDH-s7w
16:39
French Invasion of Russia

529 views / 0 likes - added 9 years ago

Napoleon's disastrous invasion of Russia More free lessons at: http://www.khanacademy.org/video?v=F_ySQvjtAxQ
08:13
Thomas Malthus and Population Growth

680 views / 1 likes - added 9 years ago

Thomas Malthus's views on population. Malthusian limits. More free lessons at: http://www.khanacademy.org/video?v=r1ywppAJ1xs
02:31 Popular
Adding subtracting mixed numbers 1 (ex 2)

743 views / 0 likes - added 9 years ago

Adding subtracting mixed numbers 1 (ex 2) More free lessons at: http://www.khanacademy.org/video?v=_btQus9HV_I
10:59
Production Possibilities Frontier

542 views / 0 likes - added 9 years ago

Tradeoffs for a hunter gatherer and the production possibilities frontier. Ceteris Paribus More free lessons at: http://www.khanacademy.org/video?v=_7VHfuWV-Qg
05:02
Consumer Surplus Introduction

511 views / 0 likes - added 9 years ago

Consumer surplus as difference between marginal benefit and price paid More free lessons at: http://www.khanacademy.org/video?v=_6kwhF6hoqQ
05:46
Total Consumer Surplus as Area

459 views / 0 likes - added 9 years ago

Looking at consumer surplus as area between the demand curve and the market price More free lessons at: http://www.khanacademy.org/video?v=RBUBIRtn0xQ
08:20
Producer Surplus

554 views / 0 likes - added 9 years ago

Looking at the supply curve as an opportunity cost curve. Understanding the producer surplus as the area between the supply curve and the market price More free lessons at: http://www.khanacademy.org/video?v=-V-Y5klejSg
11:27
Rent Control and Deadweight Loss

601 views / 0 likes - added 9 years ago

How instituting a price ceiling lower than the equilibrium price reduces the total surplus (dead weight loss)
09:24
Optimal Point on Budget Line

617 views / 0 likes - added 9 years ago

Using indifference curves to think about the point on the budget line that maximizes total utility More free lessons at: http://www.khanacademy.org/video?v=nhSSu0Nzs30
07:40
Marginal Cost and Average Total Cost

503 views / 0 likes - added 9 years ago

Looking at marginal and average total cost in the context of a juice business More free lessons at: http://www.khanacademy.org/video?v=7t8gdc3YogM
10:17
Perfect Competition

600 views / 0 likes - added 9 years ago

Conditions for perfect competition. Looking at the airline industry More free lessons at: http://www.khanacademy.org/video?v=_NznT4Cn8As
04:56
Optional Calculus Proof to Show that MR has Twice Slope of Demand

621 views / 0 likes - added 9 years ago

Using some basic calculus to show that marginal revenue has twice the slope of the demand curve for a monopolist More free lessons at: http://www.khanacademy.org/video?v=atI4QH2acuw
08:26
Oligopolies, Duopolies, Collusion, and Cartels

565 views / 0 likes - added 9 years ago

Thinking about when oligopolies behave more like monopolies or perfect competitors More free lessons at: http://www.khanacademy.org/video?v=N0L00FZnhtg
06:38
Tragedy of the Commons

469 views / 0 likes - added 9 years ago

How public resources can be abused More free lessons at: http://www.khanacademy.org/video?v=0b2Tl0x-niw
09:02
How Many People to Hire Given the MPR curve

612 views / 0 likes - added 9 years ago

Thinking 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
08:04
Real GDP and Nominal GDP

476 views / 0 likes - added 9 years ago

Using real GDP as a measure of actual productivity growth More free lessons at: http://www.khanacademy.org/video?v=lBDT2w5Wl84
06:28
GDP Deflator

478 views / 0 likes - added 9 years ago

Relationship between the GDP deflator, nominal GDP and real GDP More free lessons at: http://www.khanacademy.org/video?v=L-0LuSw2bTM
07:34
Money Supply and Demand Impacting Interest Rates

477 views / 0 likes - added 9 years ago

Examples showing how various factors can affect interest rates More free lessons at: http://www.khanacademy.org/video?v=vItRHYu-A88
11:16
The Business Cycle

625 views / 1 likes - added 9 years ago

The business cycle and how it may be driven by emotion More free lessons at: http://www.khanacademy.org/video?v=TXrOpjG4dUs
13:53
Aggregate Demand

489 views / 0 likes - added 9 years ago

Understanding how aggregate demand is different from demand for a specific good or service. Justifications for the aggregate demand curve being downward sloping More free lessons at: http://www.khanacademy.org/video?v=oLhohwfwf_U
12:15
Short Run Aggregate Supply

607 views / 0 likes - added 9 years ago

Justifications for the aggregate supply curve to be upward sloping in the short-run More free lessons at: http://www.khanacademy.org/video?v=3nbalsyibKU
06:15
Real GDP driving Price

495 views / 0 likes - added 9 years ago

Thinking about how high utilization could drive price as another justification for an upward sloping short-run aggregate supply curve More free lessons at: http://www.khanacademy.org/video?v=XsD7mqFDJs0
05:45
Cost Push Inflation

582 views / 0 likes - added 9 years ago

How an oil shock can slow the economy while causing inflation More free lessons at: http://www.khanacademy.org/video?v=3A-nAw2tY_4
09:20
Keynesian Cross

458 views / 0 likes - added 9 years ago

Analyzing planned expenditures versus actual output using the Keynesian Cross More free lessons at: http://www.khanacademy.org/video?v=sTw0e-hwYAQ
05:09
Using Reserves to Stabilize Currency

555 views / 0 likes - added 9 years ago

How 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
06:33
Financial Crisis in Thailand Caused by Speculative Attack

644 views / 1 likes - added 9 years ago

How a currency crisis in Thailand led to a banking crisis in the 1990s More free lessons at: http://www.khanacademy.org/video?v=lA3sjWwu5-s
07:00
Greek Debt Recession and Austerity (part 1)

542 views / 0 likes - added 9 years ago

A primer of why Greece is in a tough situation (more in future videos) More free lessons at: http://www.khanacademy.org/video?v=9p10aMu1Glo
05:47
LeBron asks about free throws versus three pointers

547 views / 0 likes - added 9 years ago

LeBron James asks Sal Khan whether it is easier to make three free throws or one three pointer More free lessons at: http://www.khanacademy.org/video?v=PddbEVNMgTY
05:19
Graphical Systems Application Problem

639 views / 0 likes - added 9 years ago

u14_l1_t1_we5 Graphical Systems Application Problem More free lessons at: http://www.khanacademy.org/video?v=3mimxluSVBo Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
03:03
Extraneous Solutions to Rational Equations

600 views / 0 likes - added 9 years ago

u15_l2_t1_we2 Extraneous Solutions to Rational Equations More free lessons at: http://www.khanacademy.org/video?v=bml74_PsfwA Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
10:57
Extraneous Solutions for Radical Equations

503 views / 0 likes - added 9 years ago

u16_l3_t1_we2 Extraneous Solutions for Radical Equations
02:10
Using Multiple Logarithm Properties to Simplify

519 views / 0 likes - added 9 years ago

u18_l2_t2_we4 Using Multiple Logarithm Properties to Simplify More free lessons at: http://www.khanacademy.org/video?v=RhzXX5PbsuQ Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
09:09
Inflammation

571 views / 0 likes - added 9 years ago

Dr. David Agus talks about inflammation (while Sal repeatedly misspells it with one "m") More free lessons at: http://www.khanacademy.org/video?v=GZ6I3T1RAnQ
14:34
Health Care Costs in US vs Europe

649 views / 0 likes - added 9 years ago

A discussion about US health care costs More free lessons at: http://www.khanacademy.org/video?v=6YU9HVS2GT0
09:11
The rule of 72 for compound interest

456 views / 0 likes - added 9 years ago

Using the rule of 72 to approximate how long it will take for an investment to compound More free lessons at: http://www.khanacademy.org/video?v=mec-QpjQMXY
04:08
Basics of US income tax rate schedule

494 views / 0 likes - added 9 years ago

Understanding that a marginal tax rate does not apply to all of income More free lessons at: http://www.khanacademy.org/video?v=OGVJfcSckUs
10:07
The Beauty of Algebra

489 views / 0 likes - added 9 years ago

Why the abstraction of mathematics is so fundamental More free lessons at: http://www.khanacademy.org/video?v=kpCJyQ2usJ4
07:22
Vitamin C and the Limeys

551 views / 0 likes - added 9 years ago

Sal and Dr. David Agus talk about the history of Scurvy and Vitamin C
20:47 Popular
How Earth's Tilt Causes Seasons

712 views / 0 likes - added 9 years ago

How being Earth's tilt causes seasons More free lessons at: http://www.khanacademy.org/video?v=05qDIjKevJo
06:01 Popular
Visualizing Taylor Series Approximations

703 views / 0 likes - added 9 years ago

Using Wolfram Alpha to approximate sin(x) More free lessons at: http://www.khanacademy.org/video?v=8dMLK2Wueaw
11:34
Systemic Thinking About Cancer

637 views / 0 likes - added 9 years ago

Dr. David Agus discusses thinking systemically about cancer and other things More free lessons at: http://www.khanacademy.org/video?v=7zk0ubr_lzo
13:14
Scale of the Small

691 views / 0 likes - added 9 years ago

From honey bees to cells, virus, and atoms -- understanding the scale of the very small More free lessons at: http://www.khanacademy.org/video?v=ERKx3Oa2omo
08:13
Primaries and Caucuses

452 views / 0 likes - added 9 years ago

How states choose their delegates for the national party conventions (under CC-BY-SA license) More free lessons at: http://www.khanacademy.org/video?v=z_QeYCg4yJ8
03:15
US and Japanese Quantitative Easing

506 views / 0 likes - added 9 years ago

Comparing quantitative easing in Japan to "credit easing" in the United States More free lessons at: http://www.khanacademy.org/video?v=a-R8qpea6lc
09:33
Newton's First Law of Motion

622 views / 2 likes - added 9 years ago

Newton's First Law (Galileo's Law of Inertia). More free lessons at: http://www.khanacademy.org/video?v=CQYELiTtUs8
11:15
Logarithmic Scale

514 views / 0 likes - added 9 years ago

Understanding how logarithmic scale is different from linear scale and why it could be useful More free lessons at: http://www.khanacademy.org/video?v=sBhEi4L91Sg
06:38
Firestick Farming

647 views / 0 likes - added 9 years ago

How the indigenous Australians used fire to change their environment More free lessons at: http://www.khanacademy.org/video?v=mwUyaeWxJhA
18:59
Diffusion and Osmosis

495 views / 0 likes - added 9 years ago

Diffusion and Osmosis More free lessons at: http://www.khanacademy.org/video?v=aubZU0iWtgI
15:43 Popular
Calculus: Derivatives 1 (new HD version)

886 views / 0 likes - added 9 years ago

Calculus-Derivative: 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
07:17 Popular
Are Southern Hemisphere Seasons More Severe?

810 views / 0 likes - added 9 years ago

Are Southern Hemisphere seasons more severe because of the eccentricity in Earth's orbit? More free lessons at: http://www.khanacademy.org/video?v=umvNQj-zmq4
16:22
Tau versus Pi

547 views / 0 likes - added 9 years ago

Why Tau might be a better number to look at than Pi More free lessons at: http://www.khanacademy.org/video?v=1jDDfkKKgmc
07:52
Medicare Sustainability

468 views / 0 likes - added 9 years ago

How medicare is funded and why it is even less sustainable than social security More free lessons at: http://www.khanacademy.org/video?v=o1Y0G8Z67iU
09:24
Stepping Through the Factorial Program

539 views / 0 likes - added 9 years ago

Stepping through what happens when a user inputs a particular value into our factorial program
07:37
Recursive Fibonacci Example

588 views / 0 likes - added 9 years ago

Using recursion to write a fibonacci function
04:32
Introduction to motion (part 3)

446 views / 0 likes - added 9 years ago

Using the basic equations of distance and velocity to solve motion problems
09:09
Projectile motion (part 1)

496 views / 0 likes - added 9 years ago

Using the equations of motion to figure out things about falling objects More free lessons at: http://www.khanacademy.org/video?v=15zliAL4llE
09:20
2 dimensional projectile motion (part 1)

550 views / 0 likes - added 9 years ago

Using vectors to solve 2 dimensional projectile motion problems
10:14
Calculus Proof that a=v^2/r

652 views / 0 likes - added 9 years ago

Using calculus and vectors to show that centripetal acceleration = v^2/r
01:15
Evaluate a formula using substitution

506 views / 0 likes - added 9 years ago

u10_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
03:58
Graphing using X and Y intercepts

498 views / 0 likes - added 9 years ago

u13_l1_t2_we2 Graphing using X and Y intercepts More free lessons at: http://www.khanacademy.org/video?v=6m642-2D3V4 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
02:08
Plot ordered pairs

467 views / 0 likes - added 9 years ago

u13_l1_t1_we1 Plot ordered pairs More free lessons at: http://www.khanacademy.org/video?v=5ctsUsvIp8w Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
14:15
2003 AIME II Problem 4 (part 1)

677 views / 0 likes - added 9 years ago

2003 AIME II Problem 4 (part 1) More free lessons at: http://www.khanacademy.org/video?v=gXnHodHNusg
09:06
Area Circumradius Formula Proof

635 views / 0 likes - added 9 years ago

Proof of the formula relating the area of a triangle to its circumradius More free lessons at: http://www.khanacademy.org/video?v=x_aax6LSRtE
10:04 Popular
Tangent Line Hyperbola Relationship (very optional)

1,205 views / 0 likes - added 9 years ago

How a tangent line relates to a hyperbola. Might be useful for some competitive exams where there isn't time to derive (like we are doing in this video) More free lessons at: http://www.khanacademy.org/video?v=c_8QQbVQKU0
16:39
Radius of Observable Universe

475 views / 0 likes - added 9 years ago

Radius of Observable Universe More free lessons at: http://www.khanacademy.org/video?v=6nVysrZQnOQ
02:15
(Correction) Radius of Observable Universe

479 views / 0 likes - added 9 years ago

(Correction) Radius of Observable Universe More free lessons at: http://www.khanacademy.org/video?v=b6VQv76BQDs
11:40
Stellar Distance Using Parallax

462 views / 0 likes - added 9 years ago

Stellar Distance Using Parallax More free lessons at: http://www.khanacademy.org/video?v=lVadjWOjvV8
08:00 Popular
Plate Tectonics-- Difference between crust and lithosphere

703 views / 0 likes - added 9 years ago

Plate Tectonics Introduction and Difference between crust and lithosphere More free lessons at: http://www.khanacademy.org/video?v=f2BWsPVN7c4
09:33
Structure of the Earth

545 views / 0 likes - added 9 years ago

Structure of the Earth - crust, mantle, core More free lessons at: http://www.khanacademy.org/video?v=4AxZ-6MOznY
11:50 Popular
Compositional and Mechanical Layers of the Earth

836 views / 2 likes - added 9 years ago

Crust, mantle, core, lithosphere, asthenosphere, mesosphere, outer core, inner core More free lessons at: http://www.khanacademy.org/video?v=hHteUIS0OFY
06:13
The Mohorovicic Seismic Discontinuity

637 views / 0 likes - added 9 years ago

The Mohorovicic Seismic Discontinuity- boundary between crust and mantle (or Moho) More free lessons at: http://www.khanacademy.org/video?v=yAQSucmHrAk
05:50
How we know about the Earth's core

571 views / 0 likes - added 9 years ago

S-wave shadow and P-wave detection patterns give us information about the core More free lessons at: http://www.khanacademy.org/video?v=KL0i1RSnpfI
07:18
Detectable Civilizations in our Galaxy 3

564 views / 0 likes - added 9 years ago

Reconciling with the traditional Drake Equation More free lessons at: http://www.khanacademy.org/video?v=LRmwUsxNSL0
09:41
Understanding Calendar Notation

633 views / 0 likes - added 9 years ago

Difference between BC, BCE, AD and CE. A little bit about the birth of Jesus as well. More free lessons at: http://www.khanacademy.org/video?v=EKKe7DBZVhI
12:04
Precession Causing Perihelion to Happen Later

559 views / 0 likes - added 9 years ago

Clarifying the effect of axial precession on the calendar and the date of perihelion and aphelion More free lessons at: http://www.khanacademy.org/video?v=2o-Sef6wllg
02:06
What Causes Precession and Other Orbital Changes

411 views / 0 likes - added 9 years ago

What causes precession and other orbital changes More free lessons at: http://www.khanacademy.org/video?v=nL6LMX8-bPY
10:35
Potassium-Argon (K-Ar) Dating

628 views / 0 likes - added 9 years ago

How K-Ar dating can be used to date very old volcanic rock and the things that might be buried in between More free lessons at: http://www.khanacademy.org/video?v=NMZ5kJEviD0
09:54
Chronometric Revolution

562 views / 0 likes - added 9 years ago

Discussion of the relatively recent changes in our ability as a species to shine light on our deep past More free lessons at: http://www.khanacademy.org/video?v=5mNTvtjDnP8
05:10 Popular
U.S. Customary and Metric units

732 views / 0 likes - added 9 years ago

U06_L2_T1_we1 U.S. Customary and Metric units More free lessons at: http://www.khanacademy.org/video?v=y2RHWA7t0WM Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
02:50
Comparing Celsius and Farenheit temperature scales

589 views / 0 likes - added 9 years ago

U06_L3_T1_we1 Comparing Celsius and Farenheit temperature scales More free lessons at: http://www.khanacademy.org/video?v=aASUZqJCHHA Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
02:58
Converting Farenheit to Celsius

528 views / 0 likes - added 9 years ago

U06_L3_T1_we2 Converting Farenheit to Celsius More free lessons at: http://www.khanacademy.org/video?v=NqbkvEK46xM Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
01:37
Using the Pythagorean Theorem

602 views / 0 likes - added 9 years ago

u07_l1_t4_we1 Using the Pythagorean Theorem
06:35 Popular
Acute Obtuse and Right Angles

842 views / 0 likes - added 9 years ago

u07_l1_t1_we2 Acute Obtuse and Right Angles Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
06:04
Entgegen-Zusammen Naming Scheme for Alkenes Examples

550 views / 0 likes - added 9 years ago

Entgegen-Zusammen Naming Scheme for Alkenes Examples More free lessons at: http://www.khanacademy.org/video?v=GFiizJ-jGVw
04:38
Writing and using inequalities

485 views / 0 likes - added 9 years ago

U05_L1_T3_we1 : Writing and using inequalities More free lessons at: http://www.khanacademy.org/video?v=RHe9X2HDEjA Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
06:40
Writing and using inequalities 2

447 views / 0 likes - added 9 years ago

U05_L1_T3_we2 : Writing and using inequalities 2 More free lessons at: http://www.khanacademy.org/video?v=cCMpin3Te4s Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
02:01
Writing and using inequalities 3

441 views / 0 likes - added 9 years ago

U05_L1_T3_we3 : Writing and using inequalities 3 More free lessons at: http://www.khanacademy.org/video?v=pbLiN8D9gAk Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
12:18
Graphing Using Intercepts

478 views / 0 likes - added 9 years ago

More free lessons at: http://www.khanacademy.org/video?v=6zixwWZ88tk
11:11
Graphs Using Slope-Intercept Form

491 views / 0 likes - added 9 years ago

More free lessons at: http://www.khanacademy.org/video?v=9wOalujeZf4
12:14
Using a Linear Model

511 views / 0 likes - added 9 years ago

Using a Linear Model
07:48
Inequalities Using Addition and Subtraction

576 views / 0 likes - added 9 years ago

Inequalities Using Addition and Subtraction More free lessons at: http://www.khanacademy.org/video?v=UTs4uZhu5t8
10:28
Inequalities Using Multiplication and Division

589 views / 0 likes - added 9 years ago

Inequalities Using Multiplication and Division More free lessons at: http://www.khanacademy.org/video?v=PNXozoJWsWc
10:09
Factoring Special Products

662 views / 0 likes - added 9 years ago

Factoring Special Products More free lessons at: http://www.khanacademy.org/video?v=BI_jmI4xRus
16:32
Using the Quadratic Formula

500 views / 0 likes - added 9 years ago

Using the Quadratic Formula More free lessons at: http://www.khanacademy.org/video?v=i7idZfS8t8w
08:05
Identifying Quadratic Models

516 views / 0 likes - added 9 years ago

Using y=x^2 to give a sense of why the change in the change of y (or the change in the slope) is constant
09:17
Quadratic Regression

570 views / 0 likes - added 9 years ago

Using a calculator to perform a quadratic regression
11:10
Extraneous Solutions to Radical Equations

634 views / 0 likes - added 9 years ago

Extraneous Solutions to Radical Equations More free lessons at: http://www.khanacademy.org/video?v=711pdW8TbbY
09:39 Popular
Distance Formula

749 views / 0 likes - added 9 years ago

How to find the distance between lines using the Pythagorean Formula More free lessons at: http://www.khanacademy.org/video?v=nyZuite17Pc
12:09
Polynomial Division

633 views / 0 likes - added 9 years ago

Polynomial Division More free lessons at: http://www.khanacademy.org/video?v=FXgV9ySNusc
17:27
Introduction to Heredity

450 views / 0 likes - added 9 years ago

Heredity and Classical Genetics. Dominant and recessive traits. Heterozygous and homozygous genotypes. More free lessons at: http://www.khanacademy.org/video?v=eEUvRrhmcxM
23:17
Viruses

447 views / 1 likes - added 9 years ago

Introduction to viruses More free lessons at: http://www.khanacademy.org/video?v=0h5Jd7sgQWY
04:59
Oxidative Phosphorylation and Chemiosmosis

483 views / 0 likes - added 9 years ago

Oxidative Phosphorylation and Chemiosmosis (along with slight correction of previous video) More free lessons at: http://www.khanacademy.org/video?v=W_Q17tqw_7A
21:04
Parts of a cell

541 views / 1 likes - added 9 years ago

Parts of a cell: nucleus, ribosomes, endoplasmic reticulum, Golgi bodies, mitochondria, chloroplasts, vacuoles, and vesicles
09:22
Tropomyosin and troponin and their role in regulating muscle contraction

685 views / 0 likes - added 9 years ago

Tropomyosin and troponin and their role in regulating muscle contraction. How calcium ion concentration dictates whether a muscle is contracting or not. More free lessons at: http://www.khanacademy.org/video?v=LiOfeSsjrB8
14:43 Popular
Role of the Sarcoplasmic Reticulum in Muscle Cells

872 views / 0 likes - added 9 years ago

The role of the sarcoplasmic reticulum in controlling calcium ion concentrations within the muscle cell More free lessons at: http://www.khanacademy.org/video?v=SauhB2fYQkM
Featured
16:32
Anatomy of a muscle cell

546 views / 0 likes - added 9 years ago

Understanding the structure of a muscle cell More free lessons at: http://www.khanacademy.org/video?v=uY2ZOsCnXIA
10:05
Electron Configurations

615 views / 0 likes - added 9 years ago

Introduction to using the periodic table to determine electron configurations
12:13
Periodic Table Trends: Ionization Energy

547 views / 0 likes - added 9 years ago

What an ion is. Using the periodic table to understand how difficult it is to ionize an atom. More free lessons at: http://www.khanacademy.org/video?v=ywqg9PorTAw
15:39
Other Periodic Table Trends

441 views / 0 likes - added 9 years ago

Electronegativity, metallic nature and atomic radius.
10:08
Ideal Gas Equation Example 1

503 views / 0 likes - added 9 years ago

Figuring out the number of moles of gas we have using the ideal gas equation: PV=nRT. More free lessons at: http://www.khanacademy.org/video?v=erjMiErRgSQ
15:09
Partial Pressure

463 views / 0 likes - added 9 years ago

Figuring 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

557 views / 0 likes - added 9 years ago

Specifict 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_X-0
13:57
Suspensions, Colloids and Solutions

628 views / 0 likes - added 9 years ago

Suspensions, Colloids and Solutions. The difference between Molarity and Molality. More free lessons at: http://www.khanacademy.org/video?v=3ROWXs3jtQU
09:22
Heterogenous Equilibrium

542 views / 0 likes - added 9 years ago

Ignoring the solution or the solid state molecules when calculating the equilibrium constant. More free lessons at: http://www.khanacademy.org/video?v=TsXlTWgyItw
18:37
Acid Base Introduction

578 views / 0 likes - added 9 years ago

Arrhenius, Bronsted Lowry, and Lewis Acids and Bases. More free lessons at: http://www.khanacademy.org/video?v=vShCnTY1-T0
12:22
Exponential Decay Formula Proof (can skip, involves Calculus)

639 views / 0 likes - added 9 years ago

Showing that N(t)=Ne^(-kt) describes the amount of a radioactive substance we have at time T. For students with background in Calculus. Not necessary for intro chemistry class. More free lessons at: http://www.khanacademy.org/video?v=H7nrVDV8ahc
14:37
Quasistatic and Reversible Processes

429 views / 0 likes - added 9 years ago

Using theoretically quasi-static and/or reversible processes to stay pretty much at equilibrium. More free lessons at: http://www.khanacademy.org/video?v=lKq-10ysDb4
15:38
Proof: S (or Entropy) is a valid state variable

515 views / 0 likes - added 9 years ago

Prroof that S (or entropy) is a valid state variable. More free lessons at: http://www.khanacademy.org/video?v=sPz5RrFus1Q
19:15
Entropy Intuition

452 views / 0 likes - added 9 years ago

A discussion of what entropy is and what it isn't. More free lessons at: http://www.khanacademy.org/video?v=xJf6pHqLzs0
15:40
Hess's Law and Reaction Enthalpy Change

494 views / 0 likes - added 9 years ago

Using Hess's Law and standard heats of formation to determine the enthalpy change for reactions More free lessons at: http://www.khanacademy.org/video?v=chXMpDwjBDk
09:57
Gibbs Free Energy Example

581 views / 0 likes - added 9 years ago

Determining if a reaction is spontaneous by calculating the change in Gibbs Free Energy. More free lessons at: http://www.khanacademy.org/video?v=sG1ZAdYi13A
13:56
More rigorous Gibbs Free Energy/ Spontaneity Relationship

516 views / 0 likes - added 9 years ago

More formal understanding of why a negative change in Gibbs Free Energy implies a spontaneous, irreversible reaction. More free lessons at: http://www.khanacademy.org/video?v=7aur5h44pV4
13:35
Stoichiometry Example Problem 1

601 views / 0 likes - added 9 years ago

Figuring grams of reactants and product produced from reaction of phosphorous and chlorine More free lessons at: http://www.khanacademy.org/video?v=jFv6k2OV7IU
12:31
Acid Base Titration

476 views / 1 likes - added 9 years ago

Using acid-base titration to find mass of oxalic acid More free lessons at: http://www.khanacademy.org/video?v=XjFNmfLv9_Q
16:02
Vapor Pressure Example

503 views / 0 likes - added 9 years ago

Vapor pressure example using the Ideal Gas Law More free lessons at: http://www.khanacademy.org/video?v=-QpkmwIoMaY
15:34
P/E Discussion

475 views / 0 likes - added 9 years ago

Discussion of the price-to-earnings ratio More free lessons at: http://www.khanacademy.org/video?v=V-rko8jgJ9o
10:31
ROA Discussion 1

413 views / 0 likes - added 9 years ago

A discussion of the various ways to measure return on assets More free lessons at: http://www.khanacademy.org/video?v=Oh4H3BJX1ZI
10:17
ROA Discussion 2

332 views / 0 likes - added 9 years ago

More on the return on asset discussion. More free lessons at: http://www.khanacademy.org/video?v=R_5slDeVCQk
16:59 Popular
Alien Abduction Brain Teaser

826 views / 1 likes - added 9 years ago

Saving Earth from becoming a mushroom farm. More free lessons at: http://www.khanacademy.org/video?v=K4pocYXOmTQ
11:13
Economics of a Cupcake Factory

596 views / 0 likes - added 9 years ago

Economics of a simple business leading up to a discussion on inflation/deflation. Touching on income statements. More free lessons at: http://www.khanacademy.org/video?v=XDIBJyNnLOU
11:38
Cupcake Economics 2

539 views / 0 likes - added 9 years ago

More analysis of the cupcake business. More free lessons at: http://www.khanacademy.org/video?v=-LTXzYXaAuk
12:59
Cupcake Economics 3

599 views / 0 likes - added 9 years ago

Using our spreadsheet to show why prices decrease when utilization is low and prices increase when utilization is high. More free lessons at: http://www.khanacademy.org/video?v=8x1-TeDxblU
12:32
Inflation, Deflation&Capacity Utilization

524 views / 0 likes - added 9 years ago

A discussion of inflation and deflation More free lessons at: http://www.khanacademy.org/video?v=LXrPdFn7Gn4
13:21
Inflation&Deflation 3: Obama Stimulus Plan

603 views / 0 likes - added 9 years ago

Is the stimulus large enough to offset the demand shock caused by the contraction in credit? Will it lead to inflation? More free lessons at: http://www.khanacademy.org/video?v=sZRkERfzzn4
15:30
CPI Index

647 views / 0 likes - added 9 years ago

Discussion of inflation, the CPI index and owners' equivalent rent. More free lessons at: http://www.khanacademy.org/video?v=pRIELoITIHI
03:10
Simple Analysis of Cost per Job Saved from Stimulus

533 views / 0 likes - added 9 years ago

Simple analysis of cost per job saved from stimulus More free lessons at: http://www.khanacademy.org/video?v=sSqxVMbml_k
02:51
China buys US Bonds

658 views / 0 likes - added 9 years ago

China buys US Bonds More free lessons at: http://www.khanacademy.org/video?v=Dfkq9SOWxY8
02:36
Review of China US currency situation

606 views / 0 likes - added 9 years ago

Review of China US currency situation More free lessons at: http://www.khanacademy.org/video?v=DtlFQ_nNaQM
04:17
Data on Chinese US Balance of Payments

699 views / 0 likes - added 9 years ago

Data on Chinese US Balance of Payments More free lessons at: http://www.khanacademy.org/video?v=iNemmT1hnzA
03:22 Popular
Chinese inflation

744 views / 0 likes - added 9 years ago

Chinese inflation More free lessons at: http://www.khanacademy.org/video?v=R_-V6usZJsc
04:16
Floating Exchange Effect on US

640 views / 0 likes - added 9 years ago

Floating Exchange Effect on US More free lessons at: http://www.khanacademy.org/video?v=K0GF4FT51qY
11:18
Statistics: Sample Variance

487 views / 0 likes - added 9 years ago

Using the variance of a sample to estimate the variance of a population More free lessons at: http://www.khanacademy.org/video?v=Qf3RMGXR-h8
10:02
Probability Density Functions

611 views / 0 likes - added 9 years ago

Probability density functions for continuous random variables. More free lessons at: http://www.khanacademy.org/video?v=Fvi9A_tEmXQ
10:46
Binomial Distribution 4

546 views / 0 likes - added 9 years ago

Using Excel to visualize the basketball binomial distribution More free lessons at: http://www.khanacademy.org/video?v=H0ZgOGWUcJw
10:53
ck12.org Normal Distribution Problems: Qualitative sense of normal distributions

672 views / 0 likes - added 9 years ago

Discussion of how "normal" a distribution might be More free lessons at: http://www.khanacademy.org/video?v=79duxPXpyKQ
10:25 Popular
ck12.org Normal Distribution Problems: Empirical Rule

925 views / 0 likes - added 9 years ago

Using the empirical rule (or 68-95-99.7 rule) to estimate probabilities for normal distributions More free lessons at: http://www.khanacademy.org/video?v=OhRr26AfFBU
08:16 Popular
ck12.org Exercise: Standard Normal Distribution and the Empirical Rule

889 views / 0 likes - added 9 years ago

Using the Empirical Rule with a standard normal distribution More free lessons at: http://www.khanacademy.org/video?v=2fzYE-Emar0
11:11 Popular
Small Sample Size Confidence Intervals

720 views / 0 likes - added 9 years ago

Constructing small sample size confidence intervals using t-distributions More free lessons at: http://www.khanacademy.org/video?v=K4KDLWENXm0
10:45
Correlation and Causality

668 views / 0 likes - added 9 years ago

Understanding why correlation does not imply causality (even though many in the press and some researchers often imply otherwise) More free lessons at: http://www.khanacademy.org/video?v=ROpbdO-gRUo
12:02
Bailout 6: Getting an equity infusion

631 views / 0 likes - added 9 years ago

The bank gets bailed out by an equity infusion from a sovereign wealth fund. More free lessons at: http://www.khanacademy.org/video?v=jDNalKBb3aA
10:25
Bailout 7: Bank goes into bankruptcy

636 views / 0 likes - added 9 years ago

What happens when there is no equity infusion and the bank goes in to bankruptcy. More free lessons at: http://www.khanacademy.org/video?v=MdIfefLcdoU
11:02
Banking 6: Bank Notes and Checks

622 views / 0 likes - added 9 years ago

More on how bank notes and checks can be used. More free lessons at: http://www.khanacademy.org/video?v=IOzZVmgK3IM
10:13 Popular
Banking 17: What happened to the gold?

707 views / 0 likes - added 9 years ago

Getting off the gold standard. A short discussion of the meaning of wealth. More free lessons at: http://www.khanacademy.org/video?v=NFDMXwwzyIM
14:08
Banking 18: Big Picture Discussion

596 views / 0 likes - added 9 years ago

Pros and Cons of various banking systems. More on gold. More free lessons at: http://www.khanacademy.org/video?v=T9byZBGtGuw
21:28
FRB Commentary 3: Big Picture

661 views / 0 likes - added 9 years ago

Summary of thoughts in last two videos. Discussion of why Fractional Reserve Banking is a subsidy to banks and allows them to arbitrage the yield curve. More free lessons at: http://www.khanacademy.org/video?v=8SAMey9Gl5I
09:21
The housing price conundrum

620 views / 0 likes - added 9 years ago

Why did housing prices go up so much from 2000-2006 even though classical supply/demand would not have called for it More free lessons at: http://www.khanacademy.org/video?v=8IR5LefXVPY
08:55
Housing price conundrum (part 2)

662 views / 0 likes - added 9 years ago

How lower lending standards led to housing price inflation. More free lessons at: http://www.khanacademy.org/video?v=wYAhlTHIBT4
09:49
Housing Price Conundrum (part 3)

530 views / 0 likes - added 9 years ago

Why did lending standards become more and more lax from 2000 to 2006? More free lessons at: http://www.khanacademy.org/video?v=aAfMps_VyOY
06:54
Housing Conundrum (part 4)

534 views / 0 likes - added 9 years ago

The virtuous circle of housing price appreciation making defaults go down making lending lax making housing appreciate even more More free lessons at: http://www.khanacademy.org/video?v=s6UYa2nwaDw
09:54
Exact Equations Intuition 1 (proofy)

698 views / 0 likes - added 9 years ago

Chain rule using partial derivatives (not a proof; more intuition). More free lessons at: http://www.khanacademy.org/video?v=iEpqcdaJNTQ
10:17
Integrating factors 1

544 views / 0 likes - added 9 years ago

Using an integrating factor to make a differential equation exact More free lessons at: http://www.khanacademy.org/video?v=j511hg7Hlbg
07:22
First order homegenous equations

601 views / 0 likes - added 9 years ago

Introduction to first order homogenous equations. More free lessons at: http://www.khanacademy.org/video?v=9Wfn-WWV1aY
08:23
First order homogenous equations 2

567 views / 0 likes - added 9 years ago

Another example of using substitution to solve a first order homogeneous differential equations. More free lessons at: http://www.khanacademy.org/video?v=6YRGEsQWZzY
09:45
2nd Order Linear Homogeneous Differential Equations 1

579 views / 0 likes - added 9 years ago

Introduction to 2nd order, linear, homogeneous differential equations with constant coefficients. More free lessons at: http://www.khanacademy.org/video?v=UFWAu8Ptth0
08:28
2nd Order Linear Homogeneous Differential Equations 2

590 views / 0 likes - added 9 years ago

Let's find the general solution! More free lessons at: http://www.khanacademy.org/video?v=SPVqgkOZMAc
05:59
2nd Order Linear Homogeneous Differential Equations 3

574 views / 1 likes - added 9 years ago

Let's use some initial conditions to solve for the particular solution More free lessons at: http://www.khanacademy.org/video?v=UyCwAFQt4v0
09:11
2nd Order Linear Homogeneous Differential Equations 4

626 views / 0 likes - added 9 years ago

Another example with initial conditions! More free lessons at: http://www.khanacademy.org/video?v=3uO_uPb9H8w
08:52
Repeated roots of the characterisitic equations part 2

523 views / 0 likes - added 9 years ago

An example where we use initial conditions to solve a repeated-roots differential equation. More free lessons at: http://www.khanacademy.org/video?v=YezsgIlcb68
10:11
Undetermined Coefficients 1

575 views / 0 likes - added 9 years ago

Using the method of undetermined coefficients to solve nonhomogeneous linear differential equations. More free lessons at: http://www.khanacademy.org/video?v=znE4Nq9NJCQ
11:01
Undetermined Coefficients 2

493 views / 0 likes - added 9 years ago

Another example using undetermined coefficients. More free lessons at: http://www.khanacademy.org/video?v=hbJ2o9EUmJ0
08:10
Undetermined Coefficients 3

547 views / 0 likes - added 9 years ago

Another example where the nonhomogeneous part is a polynomial More free lessons at: http://www.khanacademy.org/video?v=I3vIAzMcm4Y
11:37 Popular
Laplace Transform 5

715 views / 0 likes - added 9 years ago

Useful properties of the Laplace Transform More free lessons at: http://www.khanacademy.org/video?v=E2VxbufzuWQ
10:52
Laplace Transform to solve an equation

587 views / 0 likes - added 9 years ago

Using the Laplace Transform to solve an equation we already knew how to solve. More free lessons at: http://www.khanacademy.org/video?v=3uYb-RhM7lU
10:46
Laplace Transform solves an equation 2

532 views / 0 likes - added 9 years ago

Second part of using the Laplace Transform to solve a differential equation. More free lessons at: http://www.khanacademy.org/video?v=EdQ7Q9VoF44
18:48
Using the Laplace Transform to solve a nonhomogenous eq

484 views / 0 likes - added 9 years ago

Solving a non-homogeneous differential equation using the Laplace Transform More free lessons at: http://www.khanacademy.org/video?v=nlUG4OKN1IY
19:15
Inverse Laplace Examples

567 views / 0 likes - added 9 years ago

Using our toolkit to take some inverse Laplace Transforms More free lessons at: http://www.khanacademy.org/video?v=BbqbvSig6Mc
19:12 Popular
Laplace/Step Function Differential Equation

737 views / 0 likes - added 9 years ago

Hairy differential equation involving a step function that we use the Laplace Transform to solve. More free lessons at: http://www.khanacademy.org/video?v=R0JY8oWsuOY
12:14
Using the Convolution Theorem to Solve an Initial Value Prob

589 views / 0 likes - added 9 years ago

Using the Convolution Theorem to solve an initial value problem More free lessons at: http://www.khanacademy.org/video?v=rfyq32mHcYs
13:36
Inverting Matrices (part 3)

669 views / 0 likes - added 9 years ago

Using Gauss-Jordan elimination to invert a 3x3 matrix. More free lessons at: http://www.khanacademy.org/video?v=obts_JDS6_Q
16:33
Matrices to solve a system of equations

580 views / 0 likes - added 9 years ago

Using the inverse of a matrix to solve a system of equations. More free lessons at: http://www.khanacademy.org/video?v=AUqeb9Z3y3k
14:20
Matrices to solve a vector combination problem

580 views / 0 likes - added 9 years ago

Using matrices to figure out if some combination of 2 vectors can create a 3rd vector More free lessons at: http://www.khanacademy.org/video?v=gsNgdVdAT1o
13:53
Defining a plane in R3 with a point and normal vector

686 views / 0 likes - added 9 years ago

Determining 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
13:40
Showing that the candidate basis does span C(A)

625 views / 0 likes - added 9 years ago

Showing that just the columns of A associated with the pivot columns of rref(A) do indeed span C(A). More free lessons at: http://www.khanacademy.org/video?v=CkQOCnLWPUA
16:34 Popular
Linear Algebra: Exploring the solution set of Ax=b

1,844 views / 0 likes - added 9 years ago

Exploring the solution set of Ax=b (non homogeneous equations) More free lessons at: http://www.khanacademy.org/video?v=1PsNIzUJPkc
07:18 Popular
Linear Algebra: Rule of Sarrus of Determinants

720 views / 0 likes - added 9 years ago

A alternative "short cut" for calculating 3x3 determinants (Rule of Sarrus) More free lessons at: http://www.khanacademy.org/video?v=4xFIi0JF2AM
12:07
Linear Algebra: Transpose of a Vector

640 views / 0 likes - added 9 years ago

Transpose of a column vector. Matrix-matrix products using vectors More free lessons at: http://www.khanacademy.org/video?v=lSoaMCNKfAg
27:01 Popular
Lin Alg: Representing vectors in Rn using subspace members

1,092 views / 0 likes - added 9 years ago

Showing that any member of Rn can be represented as a unique sum of a vector in subspace V and a vector in the orthogonal complement of V. More free lessons at: http://www.khanacademy.org/video?v=M6lFqkqvUgo
18:50
Linear Algebra: Least Squares Examples

683 views / 0 likes - added 9 years ago

An example using the least squares solution to an unsolvable system More free lessons at: http://www.khanacademy.org/video?v=8mAZYv5wIcE
13:25 Popular
Linear Algebra: Another Least Squares Example

733 views / 0 likes - added 9 years ago

Using least squares approximation to fit a line to points More free lessons at: http://www.khanacademy.org/video?v=QkepM8Vv3kw
17:55 Popular
Linear Algebra: Change of Basis Matrix

718 views / 0 likes - added 9 years ago

Using a change of basis matrix to get us from one coordinate system to another. More free lessons at: http://www.khanacademy.org/video?v=1j5WnqwMdCk
13:34
Lin Alg: Invertible Change of Basis Matrix

648 views / 0 likes - added 9 years ago

Using an invertible change of basis matrix to go between different coordinate systems More free lessons at: http://www.khanacademy.org/video?v=meibWcbGqt4
27:04 Popular
Lin Alg: Example using orthogonal change-of-basis matrix to find transformation matrix

717 views / 0 likes - added 9 years ago

Example using orthogonal change-of-basis matrix to find transformation matrix More free lessons at: http://www.khanacademy.org/video?v=gfVY7cW7VLQ
19:24
Linear Algebra: The Gram-Schmidt Process

660 views / 0 likes - added 9 years ago

Finding an orthonormal basis for a subspace using the Gram-Schmidt Process More free lessons at: http://www.khanacademy.org/video?v=rHonltF77zI
13:14
Linear Algebra: Gram-Schmidt Process Example

647 views / 0 likes - added 9 years ago

Using Gram-Schmidt to find an orthonormal basis for a plane in R3 More free lessons at: http://www.khanacademy.org/video?v=tu1GPtfsQ7M
15:44
Singapore Math: Grade 3a, Unit 1 (part 6)

475 views / 0 likes - added 9 years ago

Ordering numbers using place value
06:52
Exactly Three Heads in Five Flips

661 views / 0 likes - added 9 years ago

Probability of exactly 3 heads in 5 flips using combinations More free lessons at: http://www.khanacademy.org/video?v=udG9KhNMKJw

>> View .us web videos