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  • 06:01 More on Elasticity of Demand

    More on Elasticity of Demand

    323 views / 0 likes - added

    Looking a bit deeper at why elasticity changes despite having a linear demand curve More free lessons at: http://www.khanacademy.org/video?v=YOT8ryWzwbY

  • 07:51 Taxes and Perfectly Inelastic Demand

    Taxes and Perfectly Inelastic Demand

    308 views / 0 likes - added

    Who bears the burden for the taxes when demand is inelastic More free lessons at: http://www.khanacademy.org/video?v=lsn16U5DWD4

  • 06:52 Taxes and Perfectly Elastic Demand

    Taxes and Perfectly Elastic Demand

    314 views / 0 likes - added

    Who bears the burden for a tax on a good with perfectly elastic demand More free lessons at: http://www.khanacademy.org/video?v=z1yJPpGC3-o

  • 11:59 Generalized Linear Consumption Function

    Generalized Linear Consumption Function

    290 views / 0 likes - added

    Generalizing a linear consumption function as a function of aggregate income More free lessons at: http://www.khanacademy.org/video?v=N44RZtJ4jj4

  • 12:21 Popular Heart Disease and Heart Attacks

    Heart Disease and Heart Attacks

    701 views / 1 likes - added

    Basics of heart disease, heart attacks, heart failure, angina, cardiac arrest. Special thanks to Edward J Perper, MD for help in clarifying certain aspects of this video. Licensed under CC-BY-SA More free lessons at: http://www.khanacademy.org/video?v=vYn

  • 07:53 Stenosis, ischemia and heart failure

    Stenosis, ischemia and heart failure

    509 views / 0 likes - added

    Clarifying a bunch of medical terms around heart disease More free lessons at: http://www.khanacademy.org/video?v=3858MaULDdI

  • 20:47 How Earth's Tilt Causes Seasons

    How Earth's Tilt Causes Seasons

    469 views / 0 likes - added

    How being Earth's tilt causes seasons More free lessons at: http://www.khanacademy.org/video?v=05qDIjKevJo

  • 07:12 Gravity for Astronauts in Orbit

    Gravity for Astronauts in Orbit

    387 views / 1 likes - added

    Why do astronauts appear weightless despite being near the Earth? More free lessons at: http://www.khanacademy.org/video?v=oIZV-ixRTcY

  • 09:31 Scale of Earth and  Sun

    Scale of Earth and Sun

    444 views / 2 likes - added

    Scale of Earth and Sun More free lessons at: http://www.khanacademy.org/video?v=GZx3U0dbASg

  • 11:20 Richter Scale

    Richter Scale

    489 views / 2 likes - added

    The basics of the logarithmic Richter and Moment Magnitude Scales to measure earthquakes More free lessons at: http://www.khanacademy.org/video?v=RFn-IGlayAg

  • 11:15 Logarithmic Scale

    Logarithmic Scale

    309 views / 0 likes - added

    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

  • 08:13 Why Gravity Gets So Strong Near Dense Objects

    Why Gravity Gets So Strong Near Dense Objects

    334 views / 0 likes - added

    Why Gravity Gets So Strong Near Dense Objects More free lessons at: http://www.khanacademy.org/video?v=RpOHZc6cDIw

  • 10:08 Earth Formation

    Earth Formation

    512 views / 0 likes - added

    How the Earth is a the byproduct of a local supernova More free lessons at: http://www.khanacademy.org/video?v=VbNXh0GaLYo

  • 06:56 Vi and Sal Explore How We Think About Scale

    Vi and Sal Explore How We Think About Scale

    387 views / 0 likes - added

    Vi Hart (http://www.youtube.com/vihart) and Sal talk about how we humans perceive things nonlinearly More free lessons at: http://www.khanacademy.org/video?v=4xfOq00BzJA

  • 07:17 Are Southern Hemisphere Seasons More Severe?

    Are Southern Hemisphere Seasons More Severe?

    547 views / 0 likes - added

    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

  • 02:29 Rearrange formulas to isolate specific variables

    Rearrange formulas to isolate specific variables

    354 views / 0 likes - added

    u10_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

  • 09:33 Structure of the Earth

    Structure of the Earth

    360 views / 0 likes - added

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

  • 11:50 Compositional and Mechanical Layers of the Earth

    Compositional and Mechanical Layers of the Earth

    603 views / 2 likes - added

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

  • 05:50 How we know about the Earth's core

    How we know about the Earth's core

    400 views / 0 likes - added

    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

  • 04:12 Correction Calendar Notation

    Correction Calendar Notation

    376 views / 0 likes - added

    Correcting the time difference calculation by taking into account that there is no year 0 More free lessons at: http://www.khanacademy.org/video?v=N06Jy-gQog8

  • 12:57 Milankovitch Cycles   Precession and Obliquity

    Milankovitch Cycles Precession and Obliquity

    345 views / 0 likes - added

    How changes in Earth's rotation can effect Earth's seasons and climate More free lessons at: http://www.khanacademy.org/video?v=ZD8THEz18gc

  • 13:17 Collective Learning

    Collective Learning

    378 views / 0 likes - added

    How symbolic language drives collective learning and how this is one of the truly differentiating aspects of human beings relative to the rest of the animal kingdom More free lessons at: http://www.khanacademy.org/video?v=NqR_dtZu4Mo

  • 11:07 Random Predictions for 2060

    Random Predictions for 2060

    263 views / 0 likes - added

    Sal's random predictions for the year 2060 More free lessons at: http://www.khanacademy.org/video?v=E4rbS0oxg30

  • 07:28 Algebra: Linear Equations 1

    Algebra: Linear Equations 1

    336 views / 0 likes - added

    equations of the form AX=B More free lessons at: http://www.khanacademy.org/video?v=bAerID24QJ0

  • 06:07 Algebra: Linear Equations 2

    Algebra: Linear Equations 2

    309 views / 0 likes - added

    solving equations of the form AX+B=C More free lessons at: http://www.khanacademy.org/video?v=DopnmxeMt-s

  • 06:45 Algebra: Linear Equations 3

    Algebra: Linear Equations 3

    273 views / 0 likes - added

    Linear equations with multiple variable and constant terms More free lessons at: http://www.khanacademy.org/video?v=Zn-GbH2S0Dk

  • 02:42 Basic Linear Function

    Basic Linear Function

    316 views / 0 likes - added

    U03_L2_T4_we1 : Basic Linear Function Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

  • 04:58 Exploring linear relationships

    Exploring linear relationships

    447 views / 0 likes - added

    U03_L2_T4_we2 : Exploring linear relationships More free lessons at: http://www.khanacademy.org/video?v=qPx7i1jwXX4 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

  • 04:01 Recognizing Linear Functions

    Recognizing Linear Functions

    288 views / 0 likes - added

    U03_L2_T5_we1 : Recognizing Linear Functions More free lessons at: http://www.khanacademy.org/video?v=AZroE4fJqtQ Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

  • 04:09 Exploring nonlinear relationships

    Exploring nonlinear relationships

    387 views / 0 likes - added

    U03_L2_T5_we2 : Exploring nonlinear relationships

  • 02:15 Solving and graphing linear inequalities in two variables 1

    Solving and graphing linear inequalities in two variables 1

    296 views / 0 likes - added

    U05_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)

    Graphing linear inequalities in two variables 2 (old and redone in newer video)

    271 views / 0 likes - added

    U05_L2_T1_we2 : Graphing linear inequalities in two variables

  • 03:20 Graphing linear inequalities in two variables 3

    Graphing linear inequalities in two variables 3

    286 views / 0 likes - added

    U05_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

  • 05:45 Non-Linear Systems of Equations 1

    Non-Linear Systems of Equations 1

    285 views / 0 likes - added

    U10_L2_T2_we1 Non-Linear Systems of Equations 1 More free lessons at: http://www.khanacademy.org/video?v=hjigR_rHKDI Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

  • 08:22 Non-Linear Systems of Equations 2

    Non-Linear Systems of Equations 2

    260 views / 0 likes - added

    U10_L2_T2_we2 Non-Linear Systems of Equations 2 More free lessons at: http://www.khanacademy.org/video?v=XPf8LMu7QSw Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

  • 06:57 Non-Linear Systems of Equations 3

    Non-Linear Systems of Equations 3

    300 views / 0 likes - added

    U10_L2_T2_we3 Non-Linear Systems of Equations 3 More free lessons at: http://www.khanacademy.org/video?v=FksgVpM_iXs Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

  • 03:03 Graphing Linear Inequalities in Two Variables Example 2

    Graphing Linear Inequalities in Two Variables Example 2

    254 views / 0 likes - added

    U05_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

  • 13:10 Graphs of Linear Equations

    Graphs of Linear Equations

    261 views / 0 likes - added

    More free lessons at: http://www.khanacademy.org/video?v=rgvysb9emcQ

  • 11:49 Linear Function Graphs

    Linear Function Graphs

    294 views / 0 likes - added

    Linear Function Graphs More free lessons at: http://www.khanacademy.org/video?v=EmTvdKkAUtE

  • 14:58 Linear Equations in Slope Intercept Form

    Linear Equations in Slope Intercept Form

    341 views / 0 likes - added

    Linear Equations in Slope Intercept Form More free lessons at: http://www.khanacademy.org/video?v=5fkh01mClLU

  • 09:39 Linear Equations in Point Slope Form

    Linear Equations in Point Slope Form

    333 views / 0 likes - added

    Linear Equations in Point Slope Form More free lessons at: http://www.khanacademy.org/video?v=zqCokP2vDGo

  • 10:09 Linear Equations in Standard Form

    Linear Equations in Standard Form

    359 views / 0 likes - added

    Linear Equations in Standard Form More free lessons at: http://www.khanacademy.org/video?v=BaQXFstxCMo

  • 11:46 Predicting with Linear Models

    Predicting with Linear Models

    289 views / 0 likes - added

    Predicting with Linear Models

  • 12:14 Using a Linear Model

    Using a Linear Model

    343 views / 0 likes - added

    Using a Linear Model

  • 08:30 Solving Linear Systems by Graphing

    Solving Linear Systems by Graphing

    308 views / 0 likes - added

    Solving Linear Systems by Graphing More free lessons at: http://www.khanacademy.org/video?v=5a6zpfl50go

  • 09:21 Solving Linear Systems by Substitution

    Solving Linear Systems by Substitution

    278 views / 0 likes - added

    Solving Linear Systems by Substitution More free lessons at: http://www.khanacademy.org/video?v=V7H1oUHXPkg

  • 15:18 Popular Special Types of Linear Systems

    Special Types of Linear Systems

    1,235 views / 0 likes - added

    Special Types of Linear Systems More free lessons at: http://www.khanacademy.org/video?v=5qkyuHIE2GM

  • 08:52 Systems of Linear Inequalities

    Systems of Linear Inequalities

    363 views / 0 likes - added

    Systems of Linear Inequalities

  • 08:15 Linear, Quadratic, and Exponential Models

    Linear, Quadratic, and Exponential Models

    507 views / 0 likes - added

    Linear, Quadratic, and Exponential Models

  • 19:55 Embryonic Stem Cells

    Embryonic Stem Cells

    337 views / 0 likes - added

    An overview of early development of a zygote to an embryo. Embryonic and somatic stem cells. More free lessons at: http://www.khanacademy.org/video?v=-yCIMk1x0Pk

  • 14:57 Circulatory System and the Heart

    Circulatory System and the Heart

    600 views / 0 likes - added

    Introduction to the circulatory system and the heart More free lessons at: http://www.khanacademy.org/video?v=QhiVnFvshZg

  • 11:51 Groups of the Periodic Table

    Groups of the Periodic Table

    322 views / 0 likes - added

    Properties of alkali, alkaline earth and transition metals. Halogens and noble gases. More free lessons at: http://www.khanacademy.org/video?v=LDHg7Vgzses

  • 03:04 Mini-Video on Ion Size

    Mini-Video on Ion Size

    344 views / 0 likes - added

    Correcting a mistake and learning a bit about ion size More free lessons at: http://www.khanacademy.org/video?v=HBi8xjMchZc

  • 10:15 Earnings and EPS

    Earnings and EPS

    327 views / 0 likes - added

    Earnings, EPS (earnings per share) and how they relate to the income statement and balance sheet More free lessons at: http://www.khanacademy.org/video?v=RouNXdkC0do

  • 14:47 Introduction to the Price-to-Earnings Ratio

    Introduction to the Price-to-Earnings Ratio

    291 views / 0 likes - added

    Price to Earnings Ration (or P/E ratio). More free lessons at: http://www.khanacademy.org/video?v=cppxO67e6eo

  • 15:34 P/E Discussion

    P/E Discussion

    296 views / 0 likes - added

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

  • 13:41 P/E Conundrum

    P/E Conundrum

    308 views / 0 likes - added

    A situation where the price to earnings ratio seems to not fairly price an asset More free lessons at: http://www.khanacademy.org/video?v=VrFbXxkl9JU

  • 16:59 Alien Abduction Brain Teaser

    Alien Abduction Brain Teaser

    586 views / 0 likes - added

    Saving Earth from becoming a mushroom farm. More free lessons at: http://www.khanacademy.org/video?v=K4pocYXOmTQ

  • 13:07 Statistics: Standard Deviation

    Statistics: Standard Deviation

    296 views / 0 likes - added

    Review of what we've learned. Introduction to the standard deviation. More free lessons at: http://www.khanacademy.org/video?v=HvDqbzu0i0E

  • 11:48 Pearson's Chi Square Test (Goodness of Fit)

    Pearson's Chi Square Test (Goodness of Fit)

    438 views / 0 likes - added

    Pearson's Chi Square Test (Goodness of Fit) More free lessons at: http://www.khanacademy.org/video?v=2QeDRsxSF9M

  • 10:45 Correlation and Causality

    Correlation and Causality

    411 views / 0 likes - added

    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

  • 09:45 2nd Order Linear Homogeneous Differential Equations 1

    2nd Order Linear Homogeneous Differential Equations 1

    359 views / 0 likes - added

    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

    2nd Order Linear Homogeneous Differential Equations 2

    380 views / 0 likes - added

    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

    2nd Order Linear Homogeneous Differential Equations 3

    344 views / 0 likes - added

    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

    2nd Order Linear Homogeneous Differential Equations 4

    415 views / 0 likes - added

    Another example with initial conditions! More free lessons at: http://www.khanacademy.org/video?v=3uO_uPb9H8w

  • 10:11 Undetermined Coefficients 1

    Undetermined Coefficients 1

    357 views / 0 likes - added

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

  • 08:02 3-variable linear equations (part 1)

    3-variable linear equations (part 1)

    462 views / 0 likes - added

    Visual intuition of a 3-variable linear equation.

  • 25:34 Linear Algebra: Vector Examples

    Linear Algebra: Vector Examples

    361 views / 0 likes - added

    Visually understanding basic vector operations More free lessons at: http://www.khanacademy.org/video?v=r4bH66vYjss

  • 24:47 Linear Algebra: Parametric Representations of Lines

    Linear Algebra: Parametric Representations of Lines

    362 views / 0 likes - added

    Linear Algebra: Parametric Representations of Lines in R2 and R3 More free lessons at: http://www.khanacademy.org/video?v=hWhs2cIj7Cw

  • 20:35 Linear Combinations and Span

    Linear Combinations and Span

    323 views / 0 likes - added

    Understanding linear combinations and spans of vectors More free lessons at: http://www.khanacademy.org/video?v=Qm_OS-8COwU

  • 15:46 Linear Algebra: Introduction to Linear Independence

    Linear Algebra: Introduction to Linear Independence

    352 views / 0 likes - added

    Linear Algebra: Introduction to linear dependence and independence More free lessons at: http://www.khanacademy.org/video?v=CrV1xCWdY-g

  • 17:38 More on linear independence

    More on linear independence

    355 views / 0 likes - added

    More examples determining linear dependence or independence. More free lessons at: http://www.khanacademy.org/video?v=Alhcv5d_XOs

  • 16:53 Span and Linear Independence Example

    Span and Linear Independence Example

    335 views / 0 likes - added

    Determining whether 3 vectors are linearly independent and/or span R3 More free lessons at: http://www.khanacademy.org/video?v=9kW6zFK5E5c

  • 23:29 Linear Subspaces

    Linear Subspaces

    341 views / 0 likes - added

    Introduction to linear subspaces of Rn More free lessons at: http://www.khanacademy.org/video?v=pMFv6liWK4M

  • 19:00 Linear Algebra: Basis of a Subspace

    Linear Algebra: Basis of a Subspace

    381 views / 0 likes - added

    Understanding the definition of a basis of a subspace More free lessons at: http://www.khanacademy.org/video?v=zntNi3-ybfQ

  • 18:53 Linear Algebra: Vector Triangle Inequality

    Linear Algebra: Vector Triangle Inequality

    390 views / 0 likes - added

    Proving the triangle inequality for vectors in Rn More free lessons at: http://www.khanacademy.org/video?v=PsNidCBr5II

  • 15:47 Linear Algebra: Cross Product Introduction

    Linear Algebra: Cross Product Introduction

    370 views / 0 likes - added

    Introduction to the cross product More free lessons at: http://www.khanacademy.org/video?v=pJzmiywagfY

  • 17:43 Matrices: Reduced Row Echelon Form 1

    Matrices: Reduced Row Echelon Form 1

    407 views / 0 likes - added

    Solving a system of linear equations by putting an augmented matrix into reduced row echelon form More free lessons at: http://www.khanacademy.org/video?v=L0CmbneYETs

  • 07:37 Matrices: Reduced Row Echelon Form 2

    Matrices: Reduced Row Echelon Form 2

    394 views / 0 likes - added

    Another example of solving a system of linear equations by putting an augmented matrix into reduced row echelon form More free lessons at: http://www.khanacademy.org/video?v=lP1DGtZ8Wys

  • 12:08 Matrices: Reduced Row Echelon Form 3

    Matrices: Reduced Row Echelon Form 3

    423 views / 0 likes - added

    And another example of solving a system of linear equations by putting an augmented matrix into reduced row echelon form More free lessons at: http://www.khanacademy.org/video?v=JVDrlTdzxiI

  • 11:35 Null Space 3: Relation to Linear Independence

    Null Space 3: Relation to Linear Independence

    458 views / 0 likes - added

    Understanding how the null space of a matrix relates to the linear independence of its column vectors More free lessons at: http://www.khanacademy.org/video?v=vFctYRhK2M0

  • 08:33 Showing relation between basis cols and pivot cols

    Showing relation between basis cols and pivot cols

    413 views / 0 likes - added

    Showing that linear independence of pivot columns implies linear independence of the corresponding columns in the original equation More free lessons at: http://www.khanacademy.org/video?v=BfVjTOjvI30

  • 13:53 Linear Transformations

    Linear Transformations

    426 views / 0 likes - added

    Introduction to linear transformations More free lessons at: http://www.khanacademy.org/video?v=4PCktDZJH8E

  • 17:04 Matrix Vector Products as Linear Transformations

    Matrix Vector Products as Linear Transformations

    556 views / 0 likes - added

    Matrix Vector Products as Linear Transformations More free lessons at: http://www.khanacademy.org/video?v=ondmopWLiEg

  • 17:32 Linear Transformations as Matrix Vector Products

    Linear Transformations as Matrix Vector Products

    540 views / 0 likes - added

    Showing how ANY linear transformation can be represented as a matrix vector product More free lessons at: http://www.khanacademy.org/video?v=PErhLkQcpZ8

  • 15:09 Sums and Scalar Multiples of Linear Transformations

    Sums and Scalar Multiples of Linear Transformations

    433 views / 0 likes - added

    Sums and Scalar Multiples of Linear Transformations. Definitions of matrix addition and scalar multiplication. More free lessons at: http://www.khanacademy.org/video?v=wHuY97vss18

  • 15:13 Linear Transformation Examples: Scaling and Reflections

    Linear Transformation Examples: Scaling and Reflections

    448 views / 0 likes - added

    Creating scaling and reflection transformation matrices (which are diagonal) More free lessons at: http://www.khanacademy.org/video?v=qkfODKmZ-x4

  • 17:52 Linear Transformation Examples: Rotations in R2

    Linear Transformation Examples: Rotations in R2

    432 views / 0 likes - added

    Linear Transformation Examples: Rotations in R2 More free lessons at: http://www.khanacademy.org/video?v=lPWfIq5DzqI

  • 12:21 Compositions of Linear Transformations 1

    Compositions of Linear Transformations 1

    442 views / 0 likes - added

    Introduction to compositions of Linear Transformations More free lessons at: http://www.khanacademy.org/video?v=f_DTiXZpb8M

  • 16:31 Compositions of Linear Transformations 2

    Compositions of Linear Transformations 2

    445 views / 0 likes - added

    Providing the motivation for definition of matrix products More free lessons at: http://www.khanacademy.org/video?v=BuqcKpe5ZQs

  • 18:14 Linear Algebra: Matrix Product Examples

    Linear Algebra: Matrix Product Examples

    454 views / 0 likes - added

    Example of taking the product of two matrices More free lessons at: http://www.khanacademy.org/video?v=x1z0hOyjapU

  • 18:54 Linear Algebra: Introduction to the inverse of a function

    Linear Algebra: Introduction to the inverse of a function

    434 views / 0 likes - added

    Introduction to the inverse of a function More free lessons at: http://www.khanacademy.org/video?v=-eAzhBZgq28

  • 16:34 Popular Linear Algebra: Exploring the solution set of Ax=b

    Linear Algebra: Exploring the solution set of Ax=b

    1,617 views / 0 likes - added

    Exploring the solution set of Ax=b (non homogeneous equations) More free lessons at: http://www.khanacademy.org/video?v=1PsNIzUJPkc

  • 20:00 Linear Algebra: Matrix condition for one-to-one trans

    Linear Algebra: Matrix condition for one-to-one trans

    471 views / 0 likes - added

    Showing that the rank of the of an mxn transformation matrix has to be an for the transformation to be one-to-one (injective) More free lessons at: http://www.khanacademy.org/video?v=M3FuL9qKTBs

  • 06:37 Linear Algebra: Simplifying conditions for invertibility

    Linear Algebra: Simplifying conditions for invertibility

    418 views / 0 likes - added

    Showing that a transformation is invertible if and only if rref(A) is equal to the identity matrix More free lessons at: http://www.khanacademy.org/video?v=Yz2OosyMTmY

  • 21:25 Linear Algebra: Showing that Inverses are Linear

    Linear Algebra: Showing that Inverses are Linear

    414 views / 0 likes - added

    Showing that inverse transformations are also linear More free lessons at: http://www.khanacademy.org/video?v=mr9Tow8hpCg

  • 18:00 Linear Algebra: Deriving a method for determining inverses

    Linear Algebra: Deriving a method for determining inverses

    426 views / 0 likes - added

    Determining a method for constructing inverse transformation matrices More free lessons at: http://www.khanacademy.org/video?v=6DpzCKJBsz0

  • 06:22 Linear Algebra: Example of Finding Matrix Inverse

    Linear Algebra: Example of Finding Matrix Inverse

    439 views / 0 likes - added

    Example of calculating the inverse of a matrix More free lessons at: http://www.khanacademy.org/video?v=r9aTLTN16V4

  • 18:20 Linear Algebra: Formula for 2x2 inverse

    Linear Algebra: Formula for 2x2 inverse

    449 views / 0 likes - added

    Figuring out the formula for a 2x2 matrix. Defining the determinant. More free lessons at: http://www.khanacademy.org/video?v=eEUK_ThrHuQ

  • 10:01 Linear Algebra: 3x3 Determinant

    Linear Algebra: 3x3 Determinant

    463 views / 0 likes - added

    Determinants: Finding the determinant of a 3x3 matrix More free lessons at: http://www.khanacademy.org/video?v=0c7dt2SQfLw

  • 18:40 Linear Algebra: nxn Determinant

    Linear Algebra: nxn Determinant

    435 views / 0 likes - added

    Defining the determinant for nxn matrices. An exampled of a 4x4 determinant. More free lessons at: http://www.khanacademy.org/video?v=H9BWRYJNIv4

  • 09:03 Linear Algebra: Determinants along other rows/cols

    Linear Algebra: Determinants along other rows/cols

    447 views / 0 likes - added

    Finding the determinant by going along other rows or columns More free lessons at: http://www.khanacademy.org/video?v=nu87kfmwNfU

  • 07:18 Linear Algebra: Rule of Sarrus of Determinants

    Linear Algebra: Rule of Sarrus of Determinants

    487 views / 0 likes - added

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

  • 13:20 Linear Algebra: Determinant when row multiplied by scalar

    Linear Algebra: Determinant when row multiplied by scalar

    448 views / 0 likes - added

    The determinant when a row is multiplied by a scalar More free lessons at: http://www.khanacademy.org/video?v=32rdijPB-rA

  • 02:52 Linear Algebra: (correction) scalar muliplication of row

    Linear Algebra: (correction) scalar muliplication of row

    560 views / 0 likes - added

    Correction of last video showing that the determinant when one row is multiplied by a scalar is equal to the scalar times the determinant More free lessons at: http://www.khanacademy.org/video?v=WY6QG0mZ7uQ

  • 16:55 Linear Algebra: Determinant when row is added

    Linear Algebra: Determinant when row is added

    455 views / 0 likes - added

    The determinant when one matrix has a row that is the sum of the rows of other matrices (and every other term is identical in the 3 matrices) More free lessons at: http://www.khanacademy.org/video?v=VrB3LaSD_uo

  • 08:19 Linear Algebra: Duplicate Row Determinant

    Linear Algebra: Duplicate Row Determinant

    479 views / 0 likes - added

    Determinant of a matrix with duplicate rows More free lessons at: http://www.khanacademy.org/video?v=gYv8sttBIqs

  • 10:25 Linear Algebra: Determinant after row operations

    Linear Algebra: Determinant after row operations

    441 views / 0 likes - added

    What happens to the determinant when we perform a row operation More free lessons at: http://www.khanacademy.org/video?v=kpG7xySkivg

  • 08:07 Linear Algebra: Upper Triangular Determinant

    Linear Algebra: Upper Triangular Determinant

    467 views / 0 likes - added

    The determinant of an upper triangular matrix More free lessons at: http://www.khanacademy.org/video?v=VX7K8iqoiRc

  • 09:13 Linear Algebra: Simpler 4x4 determinant

    Linear Algebra: Simpler 4x4 determinant

    505 views / 0 likes - added

    Calculating a 4x4 determinant by putting in in upper triangular form first. More free lessons at: http://www.khanacademy.org/video?v=QV0jsTiobU4

  • 21:38 Linear Algebra:  Determinant and area of a parallelogram

    Linear Algebra: Determinant and area of a parallelogram

    560 views / 0 likes - added

    Realizing that the determinant of a 2x2 matrix is equal to the area of the parallelogram defined by the column vectors of the matrix More free lessons at: http://www.khanacademy.org/video?v=n-S63_goDFg

  • 20:10 Linear Algebra: Determinant as Scaling Factor

    Linear Algebra: Determinant as Scaling Factor

    525 views / 0 likes - added

    Viewing the determinant of the transformation matrix as a scaling factor of regions More free lessons at: http://www.khanacademy.org/video?v=g3MqSdO5Ubc

  • 08:37 Linear Algebra: Transpose of a Matrix

    Linear Algebra: Transpose of a Matrix

    434 views / 0 likes - added

    Transpose of a matrix More free lessons at: http://www.khanacademy.org/video?v=2t0003_sxtU

  • 14:10 Linear Algebra:  Determinant of Transpose

    Linear Algebra: Determinant of Transpose

    473 views / 0 likes - added

    Proof by induction that transposing a matrix does not change its determinant More free lessons at: http://www.khanacademy.org/video?v=x-GV2v0dRNE

  • 08:50 Linear Algebra: Transpose of a Matrix Product

    Linear Algebra: Transpose of a Matrix Product

    448 views / 0 likes - added

    Taking the transpose of the product of two matrices More free lessons at: http://www.khanacademy.org/video?v=UdHgWK13x5I

  • 08:41 Linear Algebra:  Transposes of sums and inverses

    Linear Algebra: Transposes of sums and inverses

    469 views / 0 likes - added

    Transposes of sums and inverses More free lessons at: http://www.khanacademy.org/video?v=Br_8t58mdeI

  • 12:07 Linear Algebra: Transpose of a Vector

    Linear Algebra: Transpose of a Vector

    427 views / 0 likes - added

    Transpose of a column vector. Matrix-matrix products using vectors More free lessons at: http://www.khanacademy.org/video?v=lSoaMCNKfAg

  • 23:19 Linear Algebra: Rowspace and Left Nullspace

    Linear Algebra: Rowspace and Left Nullspace

    432 views / 0 likes - added

    Rowspace and Left Nullspace More free lessons at: http://www.khanacademy.org/video?v=qBfc57x_RSg

  • 22:08 Linear Algebra: Orthogonal Complements

    Linear Algebra: Orthogonal Complements

    469 views / 0 likes - added

    Orthogonal Complements as subspaces. More free lessons at: http://www.khanacademy.org/video?v=QOTjdgmNqlg

  • 11:14 Linear Algebra: Rank(A) = Rank(transpose of A)

    Linear Algebra: Rank(A) = Rank(transpose of A)

    514 views / 0 likes - added

    Rank(A) = Rank(transpose of A) More free lessons at: http://www.khanacademy.org/video?v=tqqVOWm9YsU

  • 09:27 Linear Algebra: dim(V) + dim(orthogonoal complelent of V)=n

    Linear Algebra: dim(V) + dim(orthogonoal complelent of V)=n

    421 views / 0 likes - added

    Showing that if V is a subspace of Rn, then dim(V) + dim(V's orthogonal complement) = n More free lessons at: http://www.khanacademy.org/video?v=pGhBfkBqok0

  • 19:38 Linear Alg: Rowspace Solution to Ax=b example

    Linear Alg: Rowspace Solution to Ax=b example

    449 views / 0 likes - added

    Visualizing the rowspace solution to Ax=b More free lessons at: http://www.khanacademy.org/video?v=qdf2CuMGdKs

  • 12:34 Lin Alg: Showing that A-transpose x A is invertible

    Lin Alg: Showing that A-transpose x A is invertible

    480 views / 0 likes - added

    Showing that (transpose of A)(A) is invertible if A has linearly independent columns More free lessons at: http://www.khanacademy.org/video?v=ESSMQH6Y5OA

  • 17:26 Linear Algebra: Projections onto Subspaces

    Linear Algebra: Projections onto Subspaces

    475 views / 0 likes - added

    Projections onto subspaces More free lessons at: http://www.khanacademy.org/video?v=5B8XluiqdHM

  • 09:28 Linear Alg: Visualizing a projection onto a plane

    Linear Alg: Visualizing a projection onto a plane

    445 views / 0 likes - added

    Visualizing a projection onto a plane. Showing that the old and new definitions of projections aren't that different. More free lessons at: http://www.khanacademy.org/video?v=uWbZlJURkfA

  • 16:16 Lin Alg: A Projection onto a Subspace is a Linear Transforma

    Lin Alg: A Projection onto a Subspace is a Linear Transforma

    477 views / 0 likes - added

    Showing that a projection onto a subspace is a linear transformation More free lessons at: http://www.khanacademy.org/video?v=cTyNpXB92bQ

  • 13:04 Linear Algebra: Subspace Projection Matrix Example

    Linear Algebra: Subspace Projection Matrix Example

    556 views / 0 likes - added

    Example of a transformation matrix for a projection onto a subspace More free lessons at: http://www.khanacademy.org/video?v=QTcSBB3uVP0

  • 09:05 Linear Alg: Projection is closest vector in subspace

    Linear Alg: Projection is closest vector in subspace

    458 views / 0 likes - added

    Showing that the projection of x onto a subspace is the closest vector in the subspace to x More free lessons at: http://www.khanacademy.org/video?v=b269qpILOpk

  • 15:32 Linear Algebra: Least Squares Approximation

    Linear Algebra: Least Squares Approximation

    444 views / 0 likes - added

    The 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

    Linear Algebra: Least Squares Examples

    459 views / 0 likes - added

    An example using the least squares solution to an unsolvable system More free lessons at: http://www.khanacademy.org/video?v=8mAZYv5wIcE

  • 13:25 Linear Algebra: Another Least Squares Example

    Linear Algebra: Another Least Squares Example

    509 views / 0 likes - added

    Using least squares approximation to fit a line to points More free lessons at: http://www.khanacademy.org/video?v=QkepM8Vv3kw

  • 16:08 Linear Algebra: Coordinates with Respect to a Basis

    Linear Algebra: Coordinates with Respect to a Basis

    460 views / 0 likes - added

    Understanding alternate coordinate systems More free lessons at: http://www.khanacademy.org/video?v=uvgru6FcyxU

  • 17:55 Linear Algebra: Change of Basis Matrix

    Linear Algebra: Change of Basis Matrix

    492 views / 0 likes - added

    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

  • 11:16 Linear Algebra: Introduction to Orthonormal Bases

    Linear Algebra: Introduction to Orthonormal Bases

    456 views / 0 likes - added

    Looking at sets and bases that are orthonormal -- or where all the vectors have length 1 and are orthogonal to each other. More free lessons at: http://www.khanacademy.org/video?v=7BFx8pt2aTQ

  • 15:28 Linear Algebra: Coordinates with respect to orthonormal bases

    Linear Algebra: Coordinates with respect to orthonormal bases

    556 views / 0 likes - added

    Seeing that orthonormal bases make for good coordinate systems More free lessons at: http://www.khanacademy.org/video?v=SWbis2zWIvo

  • 19:24 Linear Algebra: The Gram-Schmidt Process

    Linear Algebra: The Gram-Schmidt Process

    450 views / 0 likes - added

    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

    Linear Algebra: Gram-Schmidt Process Example

    454 views / 0 likes - added

    Using Gram-Schmidt to find an orthonormal basis for a plane in R3 More free lessons at: http://www.khanacademy.org/video?v=tu1GPtfsQ7M

  • 13:57 Linear Algebra:  Gram-Schmidt example with 3 basis vectors

    Linear Algebra: Gram-Schmidt example with 3 basis vectors

    501 views / 0 likes - added

    Gram-Schmidt example with 3 basis vectors More free lessons at: http://www.khanacademy.org/video?v=ZRRG386v6DI

  • 07:43 Linear Algebra: Introduction to Eigenvalues and Eigenvectors

    Linear Algebra: Introduction to Eigenvalues and Eigenvectors

    457 views / 0 likes - added

    What 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

    Linear Algebra: Proof of formula for determining Eigenvalues

    494 views / 0 likes - added

    Proof 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

    Linear Algebra: Example solving for the eigenvalues of a 2x2 matrix

    487 views / 0 likes - added

    Example solving for the eigenvalues of a 2x2 matrix More free lessons at: http://www.khanacademy.org/video?v=pZ6mMVEE89g

  • 14:34 Linear Algebra:  Finding Eigenvectors and Eigenspaces example

    Linear Algebra: Finding Eigenvectors and Eigenspaces example

    505 views / 0 likes - added

    Finding the eigenvectors and eigenspaces of a 2x2 matrix More free lessons at: http://www.khanacademy.org/video?v=3-xfmbdzkqc

  • 14:08 Linear Algebra: Eigenvalues of a 3x3 matrix

    Linear Algebra: Eigenvalues of a 3x3 matrix

    473 views / 0 likes - added

    Determining the eigenvalues of a 3x3 matrix More free lessons at: http://www.khanacademy.org/video?v=11dNghWC4HI

  • 15:34 Linear Algebra:  Eigenvectors and Eigenspaces for a 3x3 matrix

    Linear Algebra: Eigenvectors and Eigenspaces for a 3x3 matrix

    452 views / 0 likes - added

    Eigenvectors and eigenspaces for a 3x3 matrix More free lessons at: http://www.khanacademy.org/video?v=3Md5KCCQX-0

  • 13:09 Linear Algebra:  Showing that an eigenbasis makes for good coordinate systems

    Linear Algebra: Showing that an eigenbasis makes for good coordinate systems

    510 views / 0 likes - added

    Showing that an eigenbasis makes for good coordinate systems More free lessons at: http://www.khanacademy.org/video?v=C2PC9185gIw

  • 07:53 Total Final Velocity for Projectile

    Total Final Velocity for Projectile

    341 views / 0 likes - added

    Calculating the total final velocity for a projectile landing at a different altitude (mistake near end: I write 29.03 when it should be 26.03 m/s and the final total magnitude should be 26.55 m/s 78.7 degrees below horizontal More free lessons at: http:/

  • 07:18 Normal Force and Contact Force

    Normal Force and Contact Force

    339 views / 0 likes - added

    The force that keeps a block of ice from falling towards the center of the earth More free lessons at: http://www.khanacademy.org/video?v=1WOrgrIcQZU

  • 10:04 Introduction to Harmonic Motion

    Introduction to Harmonic Motion

    289 views / 0 likes - added

    Intuition behind the motion of a mass on a spring (some calculus near the end). More free lessons at: http://www.khanacademy.org/video?v=Nk2q-_jkJVs

  • 11:40 Circuits (part 1)

    Circuits (part 1)

    332 views / 0 likes - added

    Introduction to electricity, circuits, current and resistance More free lessons at: http://www.khanacademy.org/video?v=3o8_EARoMtg

  • 07:31 Viewing g as the value of Earth's Gravitational Field Near the Surface

    Viewing g as the value of Earth's Gravitational Field Near the Surface

    338 views / 0 likes - added

    Viewing 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

  • 06:47 Introduction: Crash Course U.S. Government and Politics

    Introduction: Crash Course U.S. Government and Politics

    565 views / 0 likes - added

    In which Craig Benzine introduces a brand new Crash Course about U.S. Government and Politics! This course will provide you with an overview of how the government of the United States is supposed to function, and we'll get into how it actually does functi

  • 08:28 Congressional Committees: Crash Course Government and Politics #7

    Congressional Committees: Crash Course Government and Politics #7

    472 views / 0 likes - added

    This week Craig Benzine clears up the role of committees in Congress. We’ll talk about standing committees, joint committees, conference committees, and caucuses (and not the candidate-choosing kinds) as well as the staff agencies that help advise these c

  • 12:12 Introduction to Astronomy: Crash Course Astronomy #1

    Introduction to Astronomy: Crash Course Astronomy #1

    477 views / 2 likes - added

    Welcome to the first episode of Crash Course Astronomy. Your host for this intergalactic adventure is the Bad Astronomer himself, Phil Plait. We begin with answering a question: "What is astronomy?" -- Table of Contents: What is Astronomy? 3:00 Who Studie

  • 09:29 Cycles in the Sky: Crash Course Astronomy #3

    Cycles in the Sky: Crash Course Astronomy #3

    406 views / 0 likes - added

    This week we build on our naked eye observations from last week and take a look at the cyclical phenomena that we can see at work in the universe. -- Table of Contents: Naked Eye Observations 0:28.4 Constellations 3:09.7 The Color of Stars 2:44.5 View of

  • 09:46 Popular Moon Phases: Crash Course Astronomy #4

    Moon Phases: Crash Course Astronomy #4

    1,194 views / 2 likes - added

    In this episode of Crash Course Astronomy, Phil takes you through the cause and name of the Moon's phases. -- Why the Moon Has Phases 0:36.1 Spheres in Orbit 1:05.4 Name of the Moon Phases 2:25.5 How We See It 7:48.2 -- PBS Digital Studios: http://youtube

  • 10:32 Eclipses: Crash Course Astronomy #5

    Eclipses: Crash Course Astronomy #5

    539 views / 0 likes - added

    The big question in the comments last week was, "BUT WHAT ABOUT ECLIPSES?" Today, Phil breaks 'em down for you. This episode is sponsored by Squarespace: http://www.squarespace.com/crashcourse -- As promised, Phil's sun spotting recommendations: Astronome

  • 10:03 The Gravity of the Situation: Crash Course Astronomy #7

    The Gravity of the Situation: Crash Course Astronomy #7

    519 views / 0 likes - added

    In today's episode, Phil looks at how gravity plays out across the universe. This episode is sponsored by Squarespace: http://www.squarespace.com/crashcourse -- Gravity is a Force 2:17 Different Types of Orbit 3:41 Escape Velocity 5:30 Weightless Mass 7:0

  • 10:17 Introduction to the Solar System: Crash Course Astronomy #9

    Introduction to the Solar System: Crash Course Astronomy #9

    685 views / 1 likes - added

    In today's Crash Course Astronomy, Phil takes a look at the explosive history of our cosmic backyard. We explore how we went from a giant ball of gas to the system of planets and other celestial objects we have today. This episode is sponsored by Squaresp

  • 12:04 The Sun: Crash Course Astronomy #10

    The Sun: Crash Course Astronomy #10

    560 views / 1 likes - added

    Phil takes us for a closer (eye safe!) look at the two-octillion ton star that rules our solar system. We look at the sun's core, plasma, magnetic fields, sunspots, solar flares, coronal mass ejections, and what all of that means for our planet. This epis

  • 10:14 The Earth: Crash Course Astronomy #11

    The Earth: Crash Course Astronomy #11

    637 views / 0 likes - added

    Phil starts the planet-by-planet tour of the solar system right here at home, Earth. -- Table of Contents Earth is a Planet 0:03 Layers of Earth 1:25 The Magnetic Field 5:10 Atmosphere and the Human Influence 6:14 -- PBS Digital Studios: http://youtube.co

  • 09:51 The Moon: Astronomy #12

    The Moon: Astronomy #12

    673 views / 1 likes - added

    Join Phil for a tour of our capital-M Moon, from surface features, inside to the core, and back in time to theories about its formation. This episode is brought to you by Squarespace: http://www.squarespace.com/crashcourse -- Table of Contents Many Millio

  • 10:43 Tissues, Part 1: Crash Course A&P #2

    Tissues, Part 1: Crash Course A&P #2

    498 views / 0 likes - added

    •••SUBBABLE MESSAGE••• TO: Jordan Schoonover FROM: Mom, Dad&Madison Happy Birthday Jordan! We love you sweetheart!! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything w

  • 09:43 Tissues, Part 4 - Types of Connective Tissues: Crash Course A&P #5

    Tissues, Part 4 - Types of Connective Tissues: Crash Course A&P #5

    583 views / 0 likes - added

    •••SUBBABLE MESSAGE••• TO: the world. FROM: Laura Love Rathbun Learning is the best thing to do with your you! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're

  • 14:33 The Sun&The Earth: Crash Course Big History #3

    The Sun&The Earth: Crash Course Big History #3

    549 views / 1 likes - added

    In which John Green, Hank Green, and Emily Graslie teach you about our Sun, and the formation of the planets. We're going to focus on the formation and development of the Earth, because that's where people live. You'll learn about the Solar nebula, the bi

  • 13:29 Life Begins: Crash Course Big History #4

    Life Begins: Crash Course Big History #4

    599 views / 0 likes - added

    In which Hank and John Green teach you about life on Earth. They won't be giving advice on how life should be lived, because this is a history series. Instead, they'll teach you about the earliest forms of life on Earth, and some of the ways that they dev

  • 15:05 The Evolutionary Epic: Crash Course Big History #5

    The Evolutionary Epic: Crash Course Big History #5

    412 views / 0 likes - added

    In which John Green, Hank Green, and Emily Graslie teach you about evolution. So, in the last 3.8 billion years, life on Earth has evolved from single-celled prokaryotes to the dizzying array of life we have today. So how did all this happen? We'll talk a

  • 16:14 Popular Human Evolution: Crash Course Big History #6

    Human Evolution: Crash Course Big History #6

    705 views / 1 likes - added

    In which John Green and Hank Green teach you about how human primates moved out of Africa and turned Earth into a real-life Planet of the Apes. And the apes are people! John and Hank teach you about how humans evolved, and the sort of tricks they picked u

  • 13:41 Popular Migrations and Intensification: Crash Course Big History #7

    Migrations and Intensification: Crash Course Big History #7

    742 views / 0 likes - added

    In which Hank and John Green teach you about humanity conquering the Earth. Or at least moving from Africa into the rest of the Earth. As human beings spread out across the world and populations grew, humanity reached a critical mass of innovators, and co

  • 13:58 The Modern Revolution: Crash Course Big History #8

    The Modern Revolution: Crash Course Big History #8

    493 views / 0 likes - added

    In which Hank and John Green teach you a Crash Course on the modern revolution, and the upside of the progress that humanity has made in the last 500 years or so. And while there are two sides to every history, and many of these changes haven't been great

  • 12:20 The Anthropocene and the Near Future: Crash Course Big History #9

    The Anthropocene and the Near Future: Crash Course Big History #9

    466 views / 0 likes - added

    In which John Green, Hank Green, and Emily Graslie teach you about the Anthropocene, an unofficial geological era that covers the last century or so, in which humanity has made massive progress. We've discovered the Higgs-Boson particle, and awesome elect

  • 13:31 The Deep Future: Crash Course Big History #10

    The Deep Future: Crash Course Big History #10

    540 views / 1 likes - added

    Finally, after what seems like eons and eons, the end is nigh. We're talking not only about the end of Crash Course Big History, but also the end of everything. The end of humanity and the end of the universe.John and Hank Green will teach you about what

  • 13:43 Rethinking Civilization - Crash Course World History 201

    Rethinking Civilization - Crash Course World History 201

    455 views / 0 likes - added

    In which John Green returns to teaching World History! This week, we'll be talking about the idea of civilization, some of the traditional hallmarks of so-called civilization, and why some people would choose to live outside the civilization model. It tur

  • 14:04 Money&Debt: Crash Course World History 202

    Money&Debt: Crash Course World History 202

    614 views / 0 likes - added

    In which John Green teaches about filthy, filthy lucre. Money. And Debt. So, what is money? And what is it for? And why do we use money? And why does it all disappear so quickly after payday? John will look into 75% of these questions, and if he doesn't c

  • 09:10 Popular HOW World War I Started: Crash Course World History 209

    HOW World War I Started: Crash Course World History 209

    1,009 views / 6 likes - added

    In which John Green teaches you about World War I and how it got started. Crash Course doesn't usually talk much about dates, but the way that things unfolded in July and August of 1914 are kind of important to understanding the Great War. You'll learn ab

  • 12:59 The End of Civilization (In the Bronze Age): Crash Course World History 211

    The End of Civilization (In the Bronze Age): Crash Course World History 211

    570 views / 1 likes - added

    In which John Green teaches you about the Bronze Age civilization in what we today call the middle east, and how the vast, interconnected civilization that encompassed Egypt, The Levant, and Mesopotamia came to an end. What's that you say? There was no su

  • 12:55 Asian Responses to Imperialism: Crash Course World History #213

    Asian Responses to Imperialism: Crash Course World History #213

    559 views / 0 likes - added

    In which John Green teaches you about Imperialism, but not from the perspective of the colonizers. This week John looks at some Asian perspectives on Imperialism, specifically writers from countries that were colonized by European powers. We'll look at th

  • 12:31 The Railroad Journey and the Industrial Revolution: Crash Course World History 214

    The Railroad Journey and the Industrial Revolution: Crash Course World History 214

    383 views / 1 likes - added

    In which John Green teaches you about railroads, and some of the ways they changed the world, and how they were a sort of microcosm for the Industrial Revolution as a whole. Prior to the invention of steam powered railroads, pretty much all locomotion had

  • 12:51 Popular Population, Sustainability, and Malthus: Crash Course World History 215

    Population, Sustainability, and Malthus: Crash Course World History 215

    864 views / 0 likes - added

    In which John Green teaches you about population. So, how many people can reasonably live on the Earth? Thomas Malthus got it totally wrong in the 19th century, but for some reason, he keeps coming up when we talk about population. In 1800, the human popu

  • 12:53 Conflict in Israel and Palestine: Crash Course World History 223

    Conflict in Israel and Palestine: Crash Course World History 223

    449 views / 0 likes - added

    In which John Green teaches you about conflict in Israel and Palestine. This conflict is often cast as a long-term beef going back thousands of years, and rooted in a clash between religions. Well, that's not quite true. What is true is that the conflict

  • 11:18 Popular The Vikings! - Crash Course World History 224

    The Vikings! - Crash Course World History 224

    758 views / 4 likes - added

    In which John Green teaches you about Vikings! That's right, one of our most requested subjects, the Vikings, right here on Crash Course. So what's the deal with Vikings? Well, the stuff you've heard about them may not be true. The Vikings weren't just pa

  • 12:14 War and Nation Building in Latin America: Crash Course World History 225

    War and Nation Building in Latin America: Crash Course World History 225

    622 views / 0 likes - added

    In which John Green teaches you about nation building and nationalism in Latin America. Sometimes, the nations of Latin America get compared to the nations of Europe, and are found wanting. This is kind of a silly comparison. The rise of democratic, econo

  • 10:51 Psychological Research - Crash Course Psychology #2

    Psychological Research - Crash Course Psychology #2

    504 views / 1 likes - added

    You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.

  • 10:24 Homunculus - Crash Course Psychology #6

    Homunculus - Crash Course Psychology #6

    420 views / 0 likes - added

    You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.

  • 11:50 Popular How to Train a Brain - Crash Course Psychology #11

    How to Train a Brain - Crash Course Psychology #11

    739 views / 0 likes - added

    You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.

  • 09:35 The Bobo Beatdown - Crash Course Psychology #12

    The Bobo Beatdown - Crash Course Psychology #12

    566 views / 0 likes - added

    You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.

  • 11:08 Measuring Personality: Crash Course Psychology #22

    Measuring Personality: Crash Course Psychology #22

    640 views / 1 likes - added

    You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.

  • 10:51 Feeling All the Feels: Crash Course Psychology #25

    Feeling All the Feels: Crash Course Psychology #25

    459 views / 1 likes - added

    ***Subbable Message*** To Robert, Thank you for showing me the world, darling! From Amy and That's happiness; to be dissolved into something complete and great. From Ty Scaletta ****** You can directly support Crash Course at http://www.subbable.com/crash

  • 10:10 Psychological Disorders: Crash Course Psychology #28

    Psychological Disorders: Crash Course Psychology #28

    587 views / 0 likes - added

    ***SUBBABLE MESSAGES*** To: Lola From: Daddy You are the best, I love you. *** To: Future Lia From: Mom and Dad Remember that learning isn't just useful, but also really fun! *** You can directly support Crash Course at http://www.subbable.com/crashcourse

  • 11:32 OCD&Anxiety Disorders: Crash Course Psychology #29

    OCD&Anxiety Disorders: Crash Course Psychology #29

    517 views / 0 likes - added

    You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.

  • 10:12 Eating and Body Dysmorphic Disorders: Crash Course Psychology #33

    Eating and Body Dysmorphic Disorders: Crash Course Psychology #33

    493 views / 0 likes - added

    Get Help: If you think you have an eating disorder, please contact http://www.nationaleatingdisorders.org/ for help! You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we'r

  • 11:23 Getting Help - Psychotherapy: Crash Course Psychology #35

    Getting Help - Psychotherapy: Crash Course Psychology #35

    457 views / 0 likes - added

    You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.

  • 10:12 The Nucleus: Crash Course Chemistry #1

    The Nucleus: Crash Course Chemistry #1

    461 views / 1 likes - added

    Hank does his best to convince us that chemistry is not torture, but is instead the amazing and beautiful science of stuff. Chemistry can tell us how three tiny particles - the proton, neutron and electron - come together in trillions of combinations to f

  • 11:24 Unit Conversion&Significant Figures: Crash Course Chemistry #2

    Unit Conversion&Significant Figures: Crash Course Chemistry #2

    396 views / 0 likes - added

    A unit is the frequently arbitrary designation we have given to something to convey a definite magnitude of a physical quantity and every quantity can be expressed in terms of the seven base units that are contained in the international system of units. H

  • 11:22 Popular The Periodic Table: Crash Course Chemistry #4

    The Periodic Table: Crash Course Chemistry #4

    743 views / 1 likes - added

    Hank gives us a tour of the most important table ever, including the life story of the obsessive man who championed it, Dmitri Mendeleev. The periodic table of elements is a concise, information-dense catalog of all of the different sorts of atoms in the

  • 13:34 Water and Solutions -- for Dirty Laundry: Crash Course Chemistry #7

    Water and Solutions -- for Dirty Laundry: Crash Course Chemistry #7

    524 views / 0 likes - added

    Dihydrogen monoxide (better know as water) is the key to nearly everything. It falls from the sky, makes up 60% of our bodies, and just about every chemical process related to life takes place with it or in it. Without it, none of the chemical reactions t

  • 11:31 Precipitation Reactions: Crash Course Chemistry #9

    Precipitation Reactions: Crash Course Chemistry #9

    337 views / 0 likes - added

    A lot of ionic compounds dissolve in water, dissociating into individual ions. But when two ions find each other that form an insoluble compound, they suddenly fall out of solution in what's called a precipitation reaction. In this episode of Crash Course

  • 11:13 Redox Reactions: Crash Course Chemistry #10

    Redox Reactions: Crash Course Chemistry #10

    396 views / 0 likes - added

    All the magic that we know is in the transfer of electrons. Reduction (gaining electrons) and oxidation (the loss of electrons) combine to form Redox chemistry, which contains the majority of chemical reactions. As electrons jump from atom to atom, they c

  • 10:43 How To Speak Chemistrian: Crash Course Chemistry #11

    How To Speak Chemistrian: Crash Course Chemistry #11

    358 views / 0 likes - added

    Learning to talk about chemistry can be like learning a foreign language, but Hank is here to help with some straightforward and simple rules to help you learn to speak Chemistrian like a native. Table of Contents Determining Formulas and Names of Monatom

  • 11:35 Real Gases: Crash Course Chemistry #14

    Real Gases: Crash Course Chemistry #14

    356 views / 0 likes - added

    Hank bursts our ideal gas law bubble, er, balloon, and brings us back to reality, explaining how the constants in the gas law aren't all that constant; how the ideal gas law we've spent the past two weeks with has to be corrected for volume because atoms

  • 11:26 Passing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry #16

    Passing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry #16

    337 views / 0 likes - added

    We have learned over the past few weeks that gases have real-life constraints on how they move here in the non-ideal world. As with most things in chemistry (and also in life) how a gas moves is more complex than it at first appears. In this episode, Hank

  • 11:24 Enthalpy: Crash Course Chemistry #18

    Enthalpy: Crash Course Chemistry #18

    459 views / 0 likes - added

    Energy is like the bestest best friend ever and yet, most of the time we take it for granted. Hank feels bad for our friend and wants us to learn more about it so that we can understand what it's trying to tell us - like that any bond between two atoms co

  • 13:41 Entropy: Embrace the Chaos! Crash Course Chemistry #20

    Entropy: Embrace the Chaos! Crash Course Chemistry #20

    492 views / 0 likes - added

    Life is chaos and the universe tends toward disorder. But why? If you think about it, there are only a few ways for things to be arranged in an organized manner, but there are nearly infinite other ways for those same things to be arranged. Simple rules o


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