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• 08:13

### Thomas Malthus and Population Growth

420 views / 1 likes - added

Thomas Malthus's views on population. Malthusian limits. More free lessons at: http://www.khanacademy.org/video?v=r1ywppAJ1xs

• 02:13

### Multiplying Fractions Word Problems (ex 1)

414 views / 0 likes - added

Multiplying Fractions Word Problems (ex 1)

• 03:19

### Multiplying mixed numbers 1 (ex 1)

364 views / 0 likes - added

Multiplying mixed numbers 1 (ex 1)

• 11:41

### Total Revenue and Elasticity

247 views / 0 likes - added

Thinking about how total revenue and elasticity are related More free lessons at: http://www.khanacademy.org/video?v=Udltkvm9HLc

• 05:44

### Monopoly Basics

259 views / 0 likes - added

Thinking about what would happen with one airline. The opposite of perfect competition More free lessons at: http://www.khanacademy.org/video?v=77CApfQlTuE

• 09:53

### MPC and Multiplier

251 views / 0 likes - added

Introduction to the marginal propensity to consume and the multiplier More free lessons at: http://www.khanacademy.org/video?v=O_Oozju3RRI

• 09:02

### Mathy Version of MPC and Multiplier (optional)

370 views / 0 likes - added

Generalizing what we did in the last video with more math More free lessons at: http://www.khanacademy.org/video?v=czfJKPN-HEo

• 10:27

### Keynesian Cross and the Multiplier

230 views / 0 likes - added

More on shifting aggregate planned expenditures. Connecting to the multiplier More free lessons at: http://www.khanacademy.org/video?v=aSY8XPGChAU

• 05:05

### Multiplying and Simplifying Rational Expressions

237 views / 0 likes - added

u15_l1_t2_we1 Multiplying and Simplifying Rational Expressions More free lessons at: http://www.khanacademy.org/video?v=x6FFjiHPlSI Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:40

### Algebraic Expression Least Common Multiple

267 views / 0 likes - added

u15_l1_t3_we1 Algebraic Expression Least Common Multiple Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:25

### Multiply and Simplify a Radical Expression 1

221 views / 0 likes - added

u16_l2_t1_we1 Multiply and Simply a Radical Expression More free lessons at: http://www.khanacademy.org/video?v=GEeKOeGHddY Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:07

### Multiply and Simplify a Radical Expression 2

266 views / 0 likes - added

u16_l2_t1_we2 Multiply and Simply a Radical Expression More free lessons at: http://www.khanacademy.org/video?v=sBvRJUwXJPo Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 06:04

274 views / 0 likes - added

u16_l2_t3_we1 Multiplying Binomials with Radicals More free lessons at: http://www.khanacademy.org/video?v=yAH3722GrP8 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:32

### Multiplying Complex Numbers

322 views / 0 likes - added

u16_l4_t2_we3 Multiplying Complex Numbers More free lessons at: http://www.khanacademy.org/video?v=cWn6g8Qqvs4 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 02:10

### Using Multiple Logarithm Properties to Simplify

299 views / 0 likes - added

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

• 14:34

### Health Care Costs in US vs Europe

390 views / 0 likes - added

A discussion about US health care costs More free lessons at: http://www.khanacademy.org/video?v=6YU9HVS2GT0

• 20:47

### How Earth's Tilt Causes Seasons

406 views / 0 likes - added

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

• 18:38

### The Kidney and Nephron

269 views / 0 likes - added

Overview of how the nephrons in the kidney filter blood and reabsorb water and other molecules. More free lessons at: http://www.khanacademy.org/video?v=cc8sUv2SuaY

• 09:34

### Projectile motion (part 5)

240 views / 0 likes - added

How fast was the ball that you threw upwards? More free lessons at: http://www.khanacademy.org/video?v=dlpmllTx5MY

• 02:26

### Multiplying negative real numbers

366 views / 0 likes - added

U09_L2_T4_we1 Multiplying negative real numbers More free lessons at: http://www.khanacademy.org/video?v=4ve7OaCnDLs Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:10

### Multiplying real number application

255 views / 0 likes - added

U09_L2_T4_we4 Multiplying real number application

• 02:29

### Associative property for multiplication

491 views / 0 likes - added

U09_L3_T1_we2 Associative property for multiplication

• 04:33

### Multi-step equations 1

354 views / 0 likes - added

u10_l1_t2_we1 Multi-step equations 1 More free lessons at: http://www.khanacademy.org/video?v=CGS0vihzSlc Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:46

### Multi-step equations 2

340 views / 0 likes - added

u10_l1_t2_we2 Multi-step equations 2 More free lessons at: http://www.khanacademy.org/video?v=CJyVct57-9s Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:36

### More Involved Multi-Step Equation

308 views / 0 likes - added

u10_l1_t2_we_int More Involved Multi-Step Equation

• 05:38

### Multi-Step Inequalities

316 views / 0 likes - added

u10_l2_t2_we1 Multi-Step Inequalities More free lessons at: http://www.khanacademy.org/video?v=SgKBBUFaGb4 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:47

### Multi-Step Inequalities 2

306 views / 0 likes - added

u10_l2_t2_we2 Multi-Step Inequalities 2 More free lessons at: http://www.khanacademy.org/video?v=XOAn5z8mkvI Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 07:35

### Multiplying in Scientific Notation

384 views / 0 likes - added

u11_l1_t4_we_int Multiplying in Scientific Notation More free lessons at: http://www.khanacademy.org/video?v=67jn5Zv-myg Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 01:05

### Multiplying Monomials

251 views / 0 likes - added

u11_l2_t3_we1 Multiplying Monomials More free lessons at: http://www.khanacademy.org/video?v=ssY1dFl7d30 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 02:43

### Multiplying Monomials by Polynomials

345 views / 0 likes - added

u11_l2_t3_we2 Multiplying Monomials by Polynomials More free lessons at: http://www.khanacademy.org/video?v=pD2-H15ucNE Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:48

### Multiplying Binomials

328 views / 0 likes - added

u11_l2_t3_we3 Multiplying Binomials More free lessons at: http://www.khanacademy.org/video?v=ZMLFfTX615w Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:46

### Multiplying Polynomials

247 views / 0 likes - added

u11_l2_t3_we4 Multiplying Polynomials More free lessons at: http://www.khanacademy.org/video?v=yJzLYa-_Y1k Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:59

### Evaluating an expression with multiple variables

220 views / 0 likes - added

u11_l3_t1_we1 Evaluating an expression with multiple variables

• 03:06

### Simplifying an expression with multiple variables

230 views / 0 likes - added

u11_l3_t1_we2 Simplifying an expression with multiple variables

• 02:17

### Simplifying Multivariable Polynomial

210 views / 0 likes - added

u11 l3 t2 we1 Simplifying Multivariable Polynomial

• 02:10

### Subtracting polynomials with multiple variables

297 views / 0 likes - added

u11_l3_t2_we2 Subtracting polynomials with multiple variables More free lessons at: http://www.khanacademy.org/video?v=AqMT_zB9rP8 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 02:34

### More multiplying polynomials

344 views / 0 likes - added

u11_l3_t2_we3 More multiplying polynomials More free lessons at: http://www.khanacademy.org/video?v=D6mivA_8L8U Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:14

### Dividing multivariable polynomial with monomial

380 views / 0 likes - added

u11_l3_t2_we4 Dividing multivariable polynomial with monomial More free lessons at: http://www.khanacademy.org/video?v=Yu00YJ3tAlo Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 14:26

### Sum of Squares of Polynomial Roots

265 views / 0 likes - added

Sum of Squares of Polynomial Roots (Newton Sums) More free lessons at: http://www.khanacademy.org/video?v=bbeWLtarzrE

• 09:58

### Normal vector from plane equation

384 views / 0 likes - added

Figuring out a normal vector to a plane from its equation More free lessons at: http://www.khanacademy.org/video?v=gw-4wltP5tY

• 13:04

### Development of Agriculture and Writing

312 views / 0 likes - added

The Paleolithic and Neolithic eras of the Stone Age. More free lessons at: http://www.khanacademy.org/video?v=iU58AIjh3YA

• 06:45

### Algebra: Linear Equations 3

235 views / 0 likes - added

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

• 09:23

### Ordering numeric expressions

240 views / 0 likes - added

Ordering numbers expressed as decimals, fractions, and percentages More free lessons at: http://www.khanacademy.org/video?v=Llt-KkHugRQ

• 03:03

### Multiplying Whole Numbers and Applications 1

360 views / 0 likes - added

U01_L3_T1_we1 Multiplying Whole Numbers and Applications 1 More free lessons at: http://www.khanacademy.org/video?v=Yw3EoxC_GXU Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:18

### Multiplying Whole Numbers and Applications 2

309 views / 0 likes - added

U01_L3_T1_we2 Multiplying Whole Numbers and Applications 2 More free lessons at: http://www.khanacademy.org/video?v=0WUXQNjdRvM Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:24

### Multiplying Whole Numbers and Applications 3

298 views / 0 likes - added

U01_L3_T1_we3 Multiplying Whole Numbers and Applications 3

• 01:51

### Multiplying Whole Numbers and Applications 4

277 views / 0 likes - added

U01_L3_T1_we4 Multiplying Whole Numbers and Applications 4 More free lessons at: http://www.khanacademy.org/video?v=tx2Niw7aJJ8 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 02:32

### Multiplying Whole Numbers and Applications 5

357 views / 0 likes - added

U01_L3_T1_we5 Multiplying Whole Numbers and Applications 5

• 02:39

### Multiplying Whole Numbers and Applications 6

272 views / 0 likes - added

U01_L3_T1_we6 Multiplying Whole Numbers and Applications 6 More free lessons at: http://www.khanacademy.org/video?v=bS6EmYzpou4 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 01:48

### Commutative Law of Multiplication

283 views / 0 likes - added

U01_L4_T1_we4 Commutative Law of Multiplication More free lessons at: http://www.khanacademy.org/video?v=ENKH97PYssg Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 02:16

### Associative Law of Multiplication

396 views / 0 likes - added

U01_L4_T1_we6 Associative Law of Multiplication More free lessons at: http://www.khanacademy.org/video?v=5RzDVNob0-0 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 02:26

### Multiplying Fractions

409 views / 0 likes - added

U02_L2_T1_we1 Multiplying Fractions More free lessons at: http://www.khanacademy.org/video?v=CTKMK1ZGLuk Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:22

### Multiplying Mixed Numbers

479 views / 2 likes - added

U02_L2_T1_we3 Multiplying Mixed Numbers More free lessons at: http://www.khanacademy.org/video?v=RPhaidW0dmY Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:04

### Multiplying Fractions and Mixed Numbers

413 views / 0 likes - added

U02_L2_T1_we2 Multiplying Fractions and Mixed Numbers More free lessons at: http://www.khanacademy.org/video?v=p729tFmpOXg Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:39

### Multiplying Fractions Word Problem

381 views / 0 likes - added

U02_L2_T1_we4 Multiplying Fractions Word Problem More free lessons at: http://www.khanacademy.org/video?v=YJgIGwTysk0 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:24

### Least Common Multiple (LCM)

287 views / 0 likes - added

U02_L3_T1_we6 Least Common Multiple (LCM) More free lessons at: http://www.khanacademy.org/video?v=D6yHKOYJiso Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 02:53

### Multiplying Decimals

398 views / 1 likes - added

U03_L2_T2_we1 Multiplying Decimals More free lessons at: http://www.khanacademy.org/video?v=JEHejQphIYc Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:47

### Multiplying a Decimal by a Power of 10

341 views / 0 likes - added

u3_l2_t2_we2 Multiplying a Decimal by a Power of 10 More free lessons at: http://www.khanacademy.org/video?v=mV0RxDZG05A Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 13:45

249 views / 0 likes - added

• 01:52

### Multiplying and Dividing Monomials 1

342 views / 0 likes - added

U08_L1_T1_we1 Multiplying and Dividing Monomials 1 More free lessons at: http://www.khanacademy.org/video?v=p_61XhXdlxI Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:05

### Multiplying and Dividing Monomials 2

260 views / 0 likes - added

U08_L1_T1_we2 Multiplying and Dividing Monomials 2 More free lessons at: http://www.khanacademy.org/video?v=Rtje3kbC9lM Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 02:24

### Multiplying and Dividing Monomials 3

279 views / 0 likes - added

U08_L1_T1_we3 Multiplying and Dividing Monomials 3 More free lessons at: http://www.khanacademy.org/video?v=abuhkDhowyc Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:33

### Multiplying Polynomials1

279 views / 0 likes - added

U08_L2_T3_we1 Multiplying Polynomials1 More free lessons at: http://www.khanacademy.org/video?v=HB48COey2O8 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:48

### Multiplying Polynomials 2

351 views / 0 likes - added

U08_L2_T3_we2 Multiplying Polynomials 2 More free lessons at: http://www.khanacademy.org/video?v=J1HAY8E3gms Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:19

### Multiplying Polynomials 3

292 views / 0 likes - added

U08_L2_T3_we3 Multiplying Polynomials 3 More free lessons at: http://www.khanacademy.org/video?v=bamcYQDzVTw Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:38

### Multiplying and Dividing Rational Expressions 1

234 views / 0 likes - added

U11_L1_T2_we1 Multiplying and Dividing Rational Expressions 1 More free lessons at: http://www.khanacademy.org/video?v=3GL69IA2q4s Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:52

### Multiplying and Dividing Rational Expressions 2

238 views / 0 likes - added

U11_L1_T2_we2 Multiplying and Dividing Rational Expressions 2 More free lessons at: http://www.khanacademy.org/video?v=f-wz_ZzSDdg Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:10

### Multiplying and Dividing Rational Expressions 3

239 views / 0 likes - added

U11_L1_T2_we3.1 Multiplying and Dividing Rational Expressions 3 More free lessons at: http://www.khanacademy.org/video?v=gcnk8TnzsLc Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 02:11

### Events and Outcomes 1

270 views / 0 likes - added

U12_L2_T1_we1 Events and Outcomes 1 More free lessons at: http://www.khanacademy.org/video?v=cdRLBOnLTDk Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 02:19

### Permutations and Combinations 2

254 views / 0 likes - added

U12_L2_T3_we2 Permutations and Combinations 2 More free lessons at: http://www.khanacademy.org/video?v=v9NLtiVt3XY Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 08:56

### Multiplication of Rational Numbers

257 views / 0 likes - added

• 15:02

### Multi-Step Equations

366 views / 1 likes - added

Multi-Step Equations More free lessons at: http://www.khanacademy.org/video?v=a5uNoOnEy_A

• 10:28

### Inequalities Using Multiplication and Division

345 views / 0 likes - added

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

• 08:02

### Multi-Step Inequalities

261 views / 0 likes - added

Compound Inequalities More free lessons at: http://www.khanacademy.org/video?v=xOxvyeSl0uA

• 12:01

### Solving Systems of Equations by Multiplication

335 views / 0 likes - added

Solving Systems of Equations by Multiplication More free lessons at: http://www.khanacademy.org/video?v=wYrxKGt_bLg

• 09:50

### Multiplication of Polynomials

342 views / 0 likes - added

Multiplication of Polynomials More free lessons at: http://www.khanacademy.org/video?v=fGThIRpWEE4

• 09:19

### Multiplying and Dividing Rational Expressions

305 views / 0 likes - added

Multiplying and Dividing Rational Expressions

• 25:16

### Punnett Square Fun

368 views / 0 likes - added

Dihybrid crosses. Independent assortment. Incomplete dominance. Codominance and multiple alleles. More free lessons at: http://www.khanacademy.org/video?v=D5ymMYcLtv0

• 13:53

### Sodium Potassium Pump

244 views / 0 likes - added

How a sodium potassium pump can maintain a voltage gradient across a cell or neuron's membrane More free lessons at: http://www.khanacademy.org/video?v=C_H-ONQFjpQ

• 12:13

### Periodic Table Trends: Ionization Energy

270 views / 0 likes - added

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

• 13:22

### Solubility

251 views / 0 likes - added

Solubility of salt and gas solutes in liquid solvent. More free lessons at: http://www.khanacademy.org/video?v=zjIVJh4JLNo

• 09:22

### Heterogenous Equilibrium

271 views / 0 likes - added

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

• 11:38

### Cupcake Economics 2

290 views / 0 likes - added

• 12:29

### Geithner Plan II

395 views / 0 likes - added

More on the Geithner Plan. The problem of banks buying the assets from themselves. More free lessons at: http://www.khanacademy.org/video?v=n-arbfLTCtI

• 12:17

### Statistics: Alternate Variance Formulas

307 views / 0 likes - added

Playing with the formula for variance of a population. More free lessons at: http://www.khanacademy.org/video?v=sRVGcYGjUk8

• 12:02

### Bailout 6: Getting an equity infusion

364 views / 0 likes - added

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

• 12:07

### Bailout 10: Moral Hazard

388 views / 0 likes - added

Alternate plans and moral hazard. More free lessons at: http://www.khanacademy.org/video?v=roap32sTgPk

• 11:48

### Banking 3: Fractional Reserve Banking

421 views / 0 likes - added

Fractional reserve banking and the multiplier effect. Introduction to the money supply. More free lessons at: http://www.khanacademy.org/video?v=nH2-37rTA8U

• 11:07

### Banking 4: Multiplier effect and the money supply

379 views / 0 likes - added

How "money" is created in a fractional reserve banking system. M0 and M1 definitions of the money suppy. The multiplier effect. More free lessons at: http://www.khanacademy.org/video?v=F7r7l1VG-Tw

• 10:13

### Banking 17: What happened to the gold?

459 views / 0 likes - added

Getting off the gold standard. A short discussion of the meaning of wealth. More free lessons at: http://www.khanacademy.org/video?v=NFDMXwwzyIM

• 08:55

### Housing price conundrum (part 2)

374 views / 0 likes - added

How lower lending standards led to housing price inflation. More free lessons at: http://www.khanacademy.org/video?v=wYAhlTHIBT4

• 06:54

### Housing Conundrum (part 4)

326 views / 0 likes - added

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

• 10:57

### Credit Default Swaps

339 views / 0 likes - added

Introduction to credit default swaps More free lessons at: http://www.khanacademy.org/video?v=a1lVOO9Y080

• 12:04

### Credit Default Swaps 2

338 views / 0 likes - added

Systemic risks of credit default swaps. Financial weapons of mass destruction. More free lessons at: http://www.khanacademy.org/video?v=neAFEvNsiqw

• 10:31

### Wealth Destruction 1

385 views / 0 likes - added

How bubbles destroy wealth. More free lessons at: http://www.khanacademy.org/video?v=Q7HbtnOyKMg

• 10:40

### Wealth Destruction 2

346 views / 0 likes - added

How bubbles destroy wealth. More free lessons at: http://www.khanacademy.org/video?v=eRImmzuExyg

• 17:48

### Dirac Delta Function

301 views / 0 likes - added

Introduction to the Dirac Delta Function More free lessons at: http://www.khanacademy.org/video?v=4qfdCwys2ew

• 12:13

### Laplace Transform of the Dirac Delta Function

323 views / 0 likes - added

Figuring out the Laplace Transform of the Dirac Delta Function More free lessons at: http://www.khanacademy.org/video?v=vhfjEpQWWeE

• 13:41

### Matrix multiplication (part 1)

430 views / 0 likes - added

Multiplying two 2x2 matrices.

• 14:37

### Matrix multiplication (part 2)

295 views / 0 likes - added

More on multiplying matrices.

• 12:08

### Matrices: Reduced Row Echelon Form 3

361 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

• 15:09

### Sums and Scalar Multiples of Linear Transformations

381 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

• 10:42

### More on Matrix Addition and Scalar Multiplication

386 views / 0 likes - added

More on Matrix Addition and Scalar Multiplication More free lessons at: http://www.khanacademy.org/video?v=Z19-ObbmHJE

• 06:22

### Linear Algebra: Example of Finding Matrix Inverse

389 views / 0 likes - added

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

• 07:18

### Linear Algebra: Rule of Sarrus of Determinants

422 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

398 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

489 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

• 16:08

### Linear Algebra: Coordinates with Respect to a Basis

410 views / 0 likes - added

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

• 13:20

### Lin Alg: Alternate Basis Tranformation Matrix Example

520 views / 0 likes - added

Example of finding the transformation matrix for an alternate basis More free lessons at: http://www.khanacademy.org/video?v=lCRGNykWqFI

• 12:36

### Lin Alg: Alternate Basis Tranformation Matrix Example Part 2

396 views / 0 likes - added

Showing that the transformation matrix with respect to basis B actually works. Brief point on why someone would want to operate in a different basis to begin with. More free lessons at: http://www.khanacademy.org/video?v=EyORbCPUAd4

• 19:24

### Linear Algebra: The Gram-Schmidt Process

388 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

• 09:20

### Getting At Least One Heads

340 views / 0 likes - added

Probability of getting at least one heads in multiple flips of a fair coin More free lessons at: http://www.khanacademy.org/video?v=mkyZ45KQYi4

• 07:53

### Total Final Velocity for Projectile

293 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:/

• 10:19

### Tension (part 2)

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A slightly more difficult tension problem. More free lessons at: http://www.khanacademy.org/video?v=zwDJ1wVr7Is

• 08:56

### Voltage

258 views / 0 likes - added

Difference between electrical potential (voltage) and electrical potential energy More free lessons at: http://www.khanacademy.org/video?v=zqGvUbvVQXg

• 10:53

### Cross Product 2

257 views / 0 likes - added

A little more intuition on the cross product. More free lessons at: http://www.khanacademy.org/video?v=o_puKe_lTKk

• 10:48

### Magnetism 3

279 views / 0 likes - added

Whats happens when a speeding proton goes through a magnetic field More free lessons at: http://www.khanacademy.org/video?v=LTuGQy4rmmo

• 07:01

### How a Bill Becomes a Law: Crash Course Government and Politics #9

470 views / 1 likes - added

Oh my, Craig has his work cut out for him this week. The process of how a bill becomes a law can be pretty complex, fraught with potential bill-death at every corner. As if just getting through committee isn’t difficult enough, bills have to navigate a se

• 12:12

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

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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

• 11:17

### Naked Eye Observations: Crash Course Astronomy #2

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Today on Crash Course Astronomy, Phil invites you to head outside and take a look at all the incredible things you can see with your naked eye. -- Table of Contents: Naked Eye Observations 0:28.4 Constellations 3:09.7 The Color of Stars 2:44.5 View of the

• 09:46 Popular

### Moon Phases: Crash Course Astronomy #4

1,078 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

• 12:01

### Telescopes: Crash Course Astronomy #6

401 views / 0 likes - added

Today Phil explains how telescopes work and offers up some astronomical shopping advice. -- How Telescopes Work 1:07 Refractors vs Reflectors 2:50 Technology and the Light Spectrum 7:45 -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow P

• 10:17

### Introduction to the Solar System: Crash Course Astronomy #9

588 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

472 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

558 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

613 views / 0 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

• 09:57

### The Integumentary System, Part 2 - Skin Deeper: Crash Course A&P #7

452 views / 0 likes - added

•••SUBBABLE MESSAGE••• TO: Helle Søndergaard FROM: Martin Søndergaard Congratulations for finishing first semester on physiotherapy! I'm so proud! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as

• 10:08

### Central Nervous System: Crash Course A&P #11

650 views / 1 likes - added

Today Hank talks about your central nervous system. In this episode we'll explore how your brain develops and how important location is for each of your brain's many functions. Table of Contents Central Nervous System, Location and Brain Function 1:48 Bra

• 13:41

### Migrations and Intensification: Crash Course Big History #7

417 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

• 13:43

### Rethinking Civilization - Crash Course World History 201

369 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

554 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

• 10:37

### War&Human Nature: Crash Course World History 204

550 views / 1 likes - added

In which John Green teaches you about war! Specifically, John talks about whether humanity is naturally warlike, hard-wired to kill, or if perhaps war is a cultural construct. John will talk about the Hobbes versus Rousseau debate, the effects that war ha

• 12:48

### War and Civilization: Crash Course World History 205

358 views / 3 likes - added

In which John Green investigates war, and what exactly it may or may not be good for. Was war a result of human beings organizing into larger and more complex agricultural social orders, or did war maybe create agriculture and "civilization?" It's hard to

• 10:08

### Climate Change, Chaos, and The Little Ice Age - Crash Course World History 206

656 views / 1 likes - added

In which John Green teaches you about the Little Ice Age. The Little Ice Age was a period of global cooling that occurred from the 13th to the 19th centuries. This cooling was likely caused by a number of factors, including unusual solar activity and volc

• 10:30

### Drought and Famine: Crash Course World History #208

535 views / 0 likes - added

In which John Green teaches you a little bit about drought, which is a natural weather phenomenon, and famine, which is almost always the result of human activity. Throughout human history, when food shortages strike humanity, there was food around. There

• 10:56

### Who Started World War I: Crash Course World History 210

655 views / 3 likes - added

In which John Green teaches you WHY World War I started. Or tries to anyway. With this kind of thing, it's kind of hard to assign blame to any one of the nations involved. Did the fault lie with Austria-Hungary? Germany? Russia? Julius Caesar? One thing w

• 12:55

### Asian Responses to Imperialism: Crash Course World History #213

483 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

• 12:51 Popular

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

793 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

• 13:33 Popular

### Japan in the Heian Period and Cultural History: Crash Course World History 227

721 views / 6 likes - added

In which John Green teaches you about what westerners call the middle ages and the lives of the aristocracy...in Japan. The Heian period in Japan lasted from 794CE to 1185CE, and it was an interesting time in Japan. Rather than being known for a thriving

• 11:19

### Altered States - Crash Course Psychology #10

376 views / 0 likes - added

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• 09:50

### The Growth of Knowledge: Crash Course Psychology #18

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• 10:15

### Adolescence: Crash Course Psychology #20

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• 11:04

### Brains Vs. Bias: Crash Course Psychology #24

420 views / 0 likes - added

***Subbable Message*** To: Everyone! Life is short. Don't forget to be awesome. Please. From: Dr. Dot To: All Living People Prepare - for I am about to take over the world. From: S.J. Black ****** You can directly support Crash Course at http://www.subbab

• 10:20

### Emotion, Stress and Health: Crash Course Psychology #26

549 views / 0 likes - added

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• 11:44

### Schizophrenia&Dissociative Disorders: Crash Course Psychology #32

344 views / 0 likes - added

••• Subbable Message ••• To: Margarete From: Toni Your sister thinks you are the best! Here's hoping Crash Course does an Art History season just for you. :) ••• To get your own message in the dooblydoo, you can directly support Crash Course at http://www

• 11:23

### Getting Help - Psychotherapy: Crash Course Psychology #35

407 views / 0 likes - added

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• 11:09

### Biomedical Treatments: Crash Course Psychology #36

374 views / 0 likes - added

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• 10:48

### Social Thinking: Crash Course Psychology #37

372 views / 0 likes - added

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• 10:08

### Social Influence: Crash Course Psychology #38

417 views / 0 likes - added

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• 09:54

### Prejudice&Discrimination: Crash Course Psychology #39

393 views / 0 likes - added

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• 10:41

### Aggression V. Altruism: Crash Course Psychology #40

358 views / 0 likes - added

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• 10:59

### The Creation of Chemistry - The Fundamental Laws: Crash Course Chemistry #3

311 views / 0 likes - added

Today's Crash Course Chemistry takes a historical perspective on the creation of the science, which didn't really exist until a super-smart, super-wealthy Frenchman put the puzzle pieces together - Hank tells the story of how we went from alchemists to ch

• 11:22

### The Periodic Table: Crash Course Chemistry #4

646 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

• 11:45

### Ideal Gas Problems: Crash Course Chemistry #13

389 views / 0 likes - added

We don't live in a perfect world, and neither do gases - it would be great if their particles always fulfilled the assumptions of the ideal gas law, and we could use PV=nRT to get the right answer every time. Unfortunately, the ideal gas law (like our cul

• 11:55

### Partial Pressures&Vapor Pressure: Crash Course Chemistry #15

337 views / 0 likes - added

This week we continue to spend quality time with gases, more deeply investigating some principles regarding pressure - including John Dalton's Law of Partial Pressures, vapor pressure - and demonstrating the method for collecting gas over water. Table of

• 09:04

### Electrochemistry: Crash Course Chemistry #36

401 views / 0 likes - added

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• 11:20

### The Black Legend, Native Americans, and Spaniards: Crash Course US History #1

429 views / 1 likes - added

In which John Green kicks off Crash Course US History! Why, you may ask, are we covering US History, and not more World History, or the history of some other country, or the very specific history of your home region? Well, the reasons are many. But, like

• 12:26

### When is Thanksgiving? Colonizing America: Crash Course US History #2

525 views / 1 likes - added

In which John Green teaches you about the (English) colonies in what is now the United States. He covers the first permanent English colony at Jamestown, Virginia, the various theocracies in Massachusetts, the feudal kingdom in Maryland, and even a bit ab

• 11:38

### The Quakers, the Dutch, and the Ladies: Crash Course US History #4

400 views / 2 likes - added

In which John Green teaches you about some of the colonies that were not in Virginia or Massachussetts. Old New York was once New Amsterdam. Why they changed it, I can say; ENGLISH people just liked it better that way, and when the English took New Amster

• 13:57

### Where US Politics Came From: Crash Course US History #9

401 views / 0 likes - added

In which John Green teaches you where American politicians come from. In the beginning, soon after the US constitution was adopted, politics were pretty non-existent. George Washington was elected president with no opposition, everything was new and excit

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• 12:43

### The War of 1812 - Crash Course US History #11

458 views / 0 likes - added

In which John Green teaches you about the War of 1812. The War of 1812 was fought between the United States and its former colonial overlord England. It started in, you guessed it 1812. The war lasted until 1815, and it resolved very little. John will tak

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• 14:11

### The Market Revolution: Crash Course US History #12

401 views / 0 likes - added

In which John Green teaches you about the Market Revolution. In the first half of the 19th century, the way people lived and worked in the United States changed drastically. At play was the classic (if anything in a 30 year old nation can be called classi

• 14:17

### The Election of 1860&the Road to Disunion: Crash Course US History #18

466 views / 0 likes - added

In which John Green teaches you about the election of 1860. As you may remember from last week, things were not great at this time in US history. The tensions between the North and South were rising, ultimately due to the single issue of slavery. The Nort

• 13:01

### Reconstruction and 1876: Crash Course US History #22

589 views / 1 likes - added

In which John Green teaches you about Reconstruction. After the divisive, destructive Civil War, Abraham Lincoln had a plan to reconcile the country and make it whole again. Then he got shot, Andrew Johnson took over, and the disagreements between Johnson

• 12:32

### The Industrial Economy: Crash Course US History #23

463 views / 0 likes - added

In which John Green teaches you about the Industrial Economy that arose in the United States after the Civil War. You know how when you're studying history, and you're reading along and everything seems safely in the past, and then BOOM you think, "Man, t

• 15:01

### The Progressive Era: Crash Course US History #27

429 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 keep the channel producing great conten

• 15:07

### Progressive Presidents: Crash Course US History #29

382 views / 1 likes - added

In which John Green teaches you about the Progressive Presidents, who are not a super-group of former presidents who create complicated, symphonic, rock soundscapes that transport you into a fantasy fugue state. Although that would be awesome. The preside

• 14:57 Popular

### The New Deal: Crash Course US History #34

811 views / 0 likes - added

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• 14:23

### World War II Part 2 - The Homefront: Crash Course US History #36

629 views / 1 likes - added

Crash Course World History is now available on DVD! Visit http://dft.ba/-CCWHDVD to buy a set for your home or classroom. You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as \$0 to keep up with everything

• 11:58

### Civil Rights and the 1950s: Crash Course US History #39

699 views / 4 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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

• 15:15

### The 1960s in America: Crash Course US History #40

501 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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

• 15:38

### The Clinton Years, or the 1990s: Crash Course US History #45

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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

• 15:27

### Terrorism, War, and Bush 43: Crash Course US History #46

459 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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

• 11:43

### Like Pale Gold - The Great Gatsby Part I: Crash Course English Literature #4

391 views / 0 likes - added

In which John Green explores F. Scott Fitzgerald's novel of the Jazz Age, The Great Gatsby. John introduces you to Nick Carraway, Jay Gatsby, Daisy and Tom Buchanan, and the other characters in the novel, and tries to look beyond the surface story to figu

• 12:07

### A Long and Difficult Journey, or The Odyssey: Crash Course Literature 201

479 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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

• 13:35

### Fate, Family, and Oedipus Rex: Crash Course Literature 202

452 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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

• 12:57

### Don't Reanimate Corpses! Frankenstein Part 1: Crash Course Literature 205

516 views / 1 likes - added

In which John Green teaches you about Mary Shelley's novel, Frankenstein. Sure, you know Frankenstein the cultural phenomenon, but how much do you know about the novel that started it all? You'll learn about the Romantic movement in English lit, of which

• 09:30

### Things Fall Apart, Part 2: Crash Course Literature 209

430 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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

• 11:39

### Slavery, Ghosts, and Beloved: Crash Course Literature 214

386 views / 0 likes - added

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• 11:32

### Langston Hughes&the Harlem Renaissance: Crash Course Literature 215

453 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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

• 10:48

### Mitosis: Splitting Up is Complicated - Crash Course Biology #12

416 views / 0 likes - added

Hank describes mitosis and cytokinesis - the series of processes our cells go through to divide into two identical copies. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like Cras

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• 12:45

### Natural Selection - Crash Course Biology #14

551 views / 0 likes - added

Hank guides us through the process of natural selection, the key mechanism of evolution. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.fa

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• 10:25

### Speciation: Of Ligers&Men - Crash Course Biology #15

355 views / 0 likes - added

Hank explains speciation - the evolutionary process by which new biological species arise - in terms of finches, ligers, mules, and dogs. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like CrashCourse on Facebook: http://www.facebook.c

• 11:32

### Animal Development: We're Just Tubes - Crash Course Biology #16

509 views / 0 likes - added

Hank discusses the process by which organisms grow and develop, maintaining that, in the end, we're all just tubes. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like CrashCourse on Facebook: http://www.facebook.com/youtubecrashcourse

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• 11:31

### Simple Animals: Sponges, Jellies,&Octopuses - Crash Course Biology #22

468 views / 0 likes - added

Hank introduces us to the "simplest" of the animals, complexity-wise: beginning with sponges (whose very inclusion in the list as "animals" has been called into question because they are so simple) and finishing with the most complex molluscs, octopuses a

• 10:54

### Animal Behavior - CrashCourse Biology #25

540 views / 0 likes - added

Hank and his cat Cameo help teach us about animal behavior and how we can discover why animals do the things they do. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like Crash Course on Facebook: http://www.facebook.com/youtubecrashcour

• 12:21 Popular

### The Excretory System: From Your Heart to the Toilet - CrashCourse Biology #29

795 views / 1 likes - added

Hank takes us on the fascinating journey through our excretory system to learn how our kidneys make pee. Crash Course Biology is now available on DVD! http://dft.ba/-8bCC Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse Follow Cras

• 13:11 Popular

### The Skeletal System: It's ALIVE! - CrashCourse Biology #30

770 views / 1 likes - added

Hank introduces us to the framework of our bodies, our skeleton, which apart from being the support and protection for all our fleshy parts, is involved in many other vital processes that help our bodies to function properly. Crash Course Biology is now a

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• 15:02

### Your Immune System: Natural Born Killer - Crash Course Biology #32

497 views / 0 likes - added

Hank tells us about the team of deadly ninja assassins that is tasked with protecting our bodies from all the bad guys that want to kill us - also known as our immune system. Crash Course Biology is now available on DVD! http://dft.ba/-8bCC Like CrashCour

• 09:42

### The Lives of Nonvascular Plants: Alternation of Generations - Crash Course Biology #36

469 views / 0 likes - added

Hank introduces us to nonvascular plants - liverworts, hornworts&mosses - which have bizarre features, kooky habits, and strange sex lives. Nonvascular plants inherited their reproductive cycle from algae, but have perfected it to the point where it i

• 10:24

### The Plants&The Bees: Plant Reproduction - CrashCourse Biology #38

415 views / 0 likes - added

Hank gets into the dirty details about vascular plant reproduction: they use the basic alternation of generations developed by nonvascular plants 470 million years ago, but they've tricked it out so that it works a whole lot differently compared to the wa

• 10:26 Popular

### Ecology - Rules for Living on Earth: Crash Course Biology #40

848 views / 0 likes - added

Hank introduces us to ecology - the study of the rules of engagement for all of us earthlings - which seeks to explain why the world looks and acts the way it does. The world is crammed with things, both animate and not, that have been interacting with ea

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• 11:11

### The Agricultural Revolution: Crash Course World History #1

530 views / 0 likes - added

Crash Course World History is now available on DVD! Visit http://dft.ba/-CCWHDVD to buy a set for your home or classroom. You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as \$0 to keep up with everything

• 12:53

### Islam, the Quran, and the Five Pillars All Without a Flamewar: Crash Course World History #13

405 views / 0 likes - added

Crash Course World History is now available on DVD! Visit http://dft.ba/-CCWHDVD to buy a set for your home or classroom. You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as \$0 to keep up with everything

• 12:08

### The Dark Ages...How Dark Were They, Really?: Crash Course World History #14

481 views / 0 likes - added

Crash Course World History is now available on DVD! Visit http://dft.ba/-CCWHDVD to buy a set for your home or classroom. You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as \$0 to keep up with everything

• 11:33

### The Crusades - Pilgrimage or Holy War?: Crash Course World History #15

496 views / 0 likes - added

In which John Green teaches you about the Crusades embarked upon by European Christians in the 12th and 13th centuries. Our traditional perception of the Crusades as European Colonization thinly veiled in religion isn't quite right. John covers the First

• 10:12

### Venice and the Ottoman Empire: Crash Course World History #19

513 views / 0 likes - added

In which John Green discusses the strange and mutually beneficial relationship between a republic, the citystate of Venice, and an Empire, the Ottomans--and how studying history can help you to be a better boyfriend and/or girlfriend. Together, the Ottoma

• 10:38 Popular

### Columbus, de Gama, and Zheng He! 15th Century Mariners. Crash Course: World History #21

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In which John Green teaches you about the beginning of the so-called Age of Discovery. You've probably heard of Christopher Columbus, who "discovered" America in 1492, but what about Vasco da Gama? How about Zheng He? Columbus gets a bad rap from many mod

• 11:33

### The Renaissance: Was it a Thing? - Crash Course World History #22

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In which John Green teaches you about the European Renaissance. European learning changed the world in the 15th and 16th century, but was it a cultural revolution, or an evolution? We'd argue that any cultural shift that occurs over a couple of hundred ye

• 11:55 Popular

### The French Revolution: Crash Course World History #29

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In which John Green examines the French Revolution, and gets into how and why it differed from the American Revolution. Was it the serial authoritarian regimes? The guillotine? The Reign of Terror? All of this and more contributed to the French Revolution

• 12:35

### Haitian Revolutions: Crash Course World History #30

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Ideas like liberty, freedom, and self-determination were hot stuff in the late 18th century, as evidenced by our recent revolutionary videos. Although freedom was breaking out all over, many of the societies that were touting these ideas relied on slave l

• 13:43

### Latin American Revolutions: Crash Course World History #31

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In which John Green talks about the many revolutions of Latin America in the 19th century. At the beginning of the 1800s, Latin America was firmly under the control of Spain and Portugal. The revolutionary zeal that had recently created the United States

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