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 | | time | views | |
 | 2015 AP Biology free response 5 | 6:54 | 1,089 | |
 | 2015 AP Biology free response 4 | 5:24 | 752 | |
 | 2015 AP Biology free response 3 | 8:31 | 884 | |
 | 2015 AP Biology free response 2 c d | 9:32 | 939 | |
 | 2015 AP Biology free response 1 a c | 11:12 | 880 | |
 | 2015 AP Biology free response 1 d e | 7:40 | 789 | |
 | 2015 AP Physics 1 free response 3d | 4:80 | 1,542 | |
 | 2015 AP Physics 1 free response 3c | 8:16 | 718 | |
 | 2015 AP Physics 1 free response 3b | 5:45 | 535 | |
 | 2015 AP Physics 1 free response 3a | 7:46 | 930 | |
 | 2015 AP Physics 1 free response 5 | 12:20 | 1,778 | |
 | 2015 AP Physics 1 free response 4 | 10:57 | 1,472 | |
 | 2015 AP Physics 1 free response 2 c and d | 9:52 | 1,260 | |
 | 2015 AP Physics I free response 2 a and b | 11:56 | 1,336 | |
 | Avoiding common mistakes in historical essays | 9:45 | 5,172 | |
 | How to read a document | 12:35 | 7,224 | |
 | 2015 AP Physics 1 free response 1c | 8:44 | 3,331 | |
 | 2015 AP Physics 1 free response 1b | 9:36 | 2,124 | |
 | 2015 AP Physics 1 free response 1a | 5:19 | 2,418 | |
 | The discovery of the double helix structure of DNA | 8:56 | 5,363 | |
 | Hershey and Chase conclusively show DNA genetic material | 8:49 | 3,950 | |
 | Establishing DNA as transformation principle | 10:19 | 3,412 | |
 | How to read a document part 2 | 13:49 | 5,052 | |
 | Introduction to verb tense | The parts of speech | Grammar | 1:46 | 6,102 | |
 | Introduction to Verbs | The parts of speech | Grammar | 1:26 | 6,901 | |
 | Perfect progressive aspect | The parts of speech | Grammar | 2:11 | 3,560 | |
 | Progressive aspect | The parts of speech | Grammar | 2:45 | 3,831 | |
 | Perfect aspect | The parts of speech | Grammar | 2:31 | 3,744 | |
 | The simple aspect | The parts of speech | Grammar | 1:32 | 3,381 | |
 | Introduction to verb aspect | The parts of speech | Grammar | 1:50 | 3,468 | |
 | The irregular verb gets taken | The parts of speech | Grammar | 3:14 | 3,121 | |
 | The vowel-shift irregular verb | The parts of speech | Grammar | 3:11 | 3,818 | |
 | Introduction to irregular verbs | The parts of speech | Grammar | 3:29 | 3,933 | |
 | Linking verbs | The parts of speech | Grammar | 3:20 | 4,912 | |
 | Helping verbs | The parts of speech | Grammar | 2:54 | 5,015 | |
 | Modal verbs | The parts of speech | Grammar | 4:53 | 3,154 | |
 | The truly irregular irregular verbs | The parts of speech | Grammar | 2:53 | 3,017 | |
 | The funky -ed irregular verb | The parts of speech | Grammar | 1:53 | 3,497 | |
 | Thinking like a historian | 8:48 | 7,813 | |
 | Irregular plural nouns | foreign plurals | Grammar | 4:57 | 9,359 | |
 | Introduction to Grammar | 2:46 | 34,865 | |
 | Thomas Hunt Morgan and fruit flies | 10:40 | 3,854 | |
 | Boveri-Sutton Chromosome Theory | 10:59 | 3,485 | |
 | Circuit Terminology | Electrical Engineering | Khan Academy | 8:40 | 8,196 | |
 | The scientific method | 11:49 | 19,503 | |
 | Small x approximation for large Kc | 14:80 | 3,327 | |
 | Small x approximation for small Kc | 9:40 | 3,691 | |
 | Buffer capacity | 10:44 | 7,141 | |
 | Biology overview | 4:34 | 31,305 | |
 | Recognizing graph of exponential after transformation | 6:55 | 2,479 | |
 | Example of widget to graph exponential | 3:15 | 1,581 | |
 | Modeling narwhals with an exponential function | 4:52 | 2,622 | |
 | Modeling chain letter with exponential function | 3:48 | 1,421 | |
 | Modeling with an exponential function | 4:18 | 1,373 | |
 | Transforming exponential graphs | 3:50 | 1,436 | |
 | Rational function graph based on zeros | 7:47 | 1,467 | |
 | Deducing y intercept of rational function | 3:80 | 1,586 | |
 | Picking graph based on horizontal asymptote | 3:16 | 1,176 | |
 | Picking graphs based on vertical asymptotes | 5:33 | 1,136 | |
 | Picking hyperbola graph example | 5:15 | 1,490 | |
 | Picking hyperbola equation | 2:21 | 1,105 | |
 | Understanding behavior of asymptotes | 7:60 | 2,118 | |
 | Identifying zeros, vertical asymptotes and removable discontinuities | 6:46 | 1,028 | |
 | End behavior of rational functions examples | 10:70 | 1,116 | |
 | Example solving equation with rational expressions | 7:12 | 2,234 | |
 | Equation with rational expressions | 5:12 | 1,224 | |
 | Least common multiples of polynomials | 6:52 | 1,060 | |
 | Subtracting rational expressions with factored denominators | 4:48 | 781 | |
 | Simplifying rational expressions examples | 6:59 | 1,933 | |
 | Simplifying rational expression with higher degree terms | 5:53 | 820 | |
 | Rational expression with two variables | 6:11 | 999 | |
 | Finding expression for equation example | 6:20 | 771 | |
 | Adding rational expression example | 5:11 | 1,039 | |
 | Subtracting rational expressions | 4:47 | 826 | |
 | Radical equation with extraneous solution | 3:59 | 1,977 | |
 | Radical equation with two solutions | 5:29 | 1,299 | |
 | Modeling with composite functions examples | 6:43 | 1,266 | |
 | Inverse of rational function | 7:20 | 1,335 | |
 | Inverse of a radical function | 4:37 | 990 | |
 | Example picking transformation between functions | 4:21 | 1,058 | |
 | Example identifying transformation compressing function | 3:16 | 1,226 | |
 | Shifting functions algebraically examples | 7:42 | 3,298 | |
 | Example constructing exponential from initial value and common ratio | 1:40 | 2,126 | |
 | Graphing exponentials exercise examples | 4:60 | 1,981 | |
 | Recognizing rational and irrational expressions examples | 6:26 | 1,420 | |
 | Example function composition notation | 4:10 | 2,354 | |
 | Example using graph widget to shift graph | 2:48 | 1,238 | |
 | Simplifying hairy exponent expressions | 6:70 | 3,013 | |
 | Simplifying more involved radical expressions | 4:43 | 3,102 | |
 | Simplifying radicals examples | 6:20 | 3,490 | |
 | nth roots and fraction exponents equivalence examples | 4:19 | 3,391 | |
 | Position vector valued functions | Multivariable Calculus | Khan Academy | 7:50 | 5,195 | |
 | Comparing features of quadratic functions | 4:11 | 1,538 | |
 | Quadratic examples with zeros, vertex and line of symmetry | 8:23 | 2,160 | |
 | pH and pKa relationship for buffers | 7:50 | 7,548 | |
 | Solving quadratic by completing the square | 6:19 | 2,579 | |
 | Example completing the square | 3:20 | 2,236 | |
 | Solving quadratic with non one leading coefficient | 4:35 | 7,801 | |
 | Solving quadratics by taking square roots | 5:12 | 6,812 | |
 | Finding term of geometric sequence | 2:14 | 9,534 | |
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