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Calculus, computer science, statistics and math contests. Free AP, AMC and AIME practice, topic notes and explanations.

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Math and Computer Science

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Math Contest Practice →AMC 8, AMC 10/12 and AIME past papers with solutions and study notes.
5 units
  1. Arithmetic & Reasoning
  2. Algebra
  3. Number Theory
  4. Counting & Probability
  5. Geometry
AP Calculus AB Practice →Past AP Calculus AB exams with explanations, scoring guidelines, topic notes and graph animations.
9 units
  1. Unit 1 – Limits and Continuity
  2. Unit 2 – Differentiation: Definition and Fundamental Properties
  3. Unit 3 – Differentiation: Composite, Implicit, and Inverse Functions
  4. Unit 4 – Contextual Applications of Differentiation
  5. Unit 5 – Analytical Applications of Differentiation
  6. Unit 6 – Integration and Accumulation of Change
  7. Unit 7 – Differential Equations
  8. Unit 8 – Applications of Integration
  9. Older exams only (no longer in the course)
AP Calculus BC Practice →Past AP Calculus BC exams with explanations, scoring guidelines, topic notes and graph animations.
11 units
  1. Unit 1 – Limits and Continuity
  2. Unit 2 – Differentiation: Definition and Fundamental Properties
  3. Unit 3 – Differentiation: Composite, Implicit, and Inverse Functions
  4. Unit 4 – Contextual Applications of Differentiation
  5. Unit 5 – Analytical Applications of Differentiation
  6. Unit 6 – Integration and Accumulation of Change
  7. Unit 7 – Differential Equations
  8. Unit 8 – Applications of Integration
  9. Unit 9 – Parametric Equations, Polar Coordinates, and Vector-Valued Functions (BC only)
  10. Unit 10 – Infinite Sequences and Series (BC only)
  11. Older exams only (no longer in the course)
AP Computer Science A Practice →Practice exams, topic study notes, interactive examples and progress tracking.
4 units
  1. Unit 1 · Using Objects and Methods
  2. Unit 2 · Selection and Iteration
  3. Unit 3 · Class Creation
  4. Unit 4 · Data Collections
AP Statistics Practice →Past AP Statistics exams with explanations, scoring guidelines, topic notes and graph animations.
9 units
  1. Unit 1 – Exploring One-Variable Data
  2. Unit 2 – Exploring Two-Variable Data
  3. Unit 3 – Collecting Data
  4. Unit 4 – Probability, Random Variables, and Probability Distributions
  5. Unit 5 – Sampling Distributions
  6. Unit 6 – Inference for Categorical Data: Proportions
  7. Unit 7 – Inference for Quantitative Data: Means
  8. Unit 8 – Inference for Categorical Data: Chi-Square
  9. Unit 9 – Inference for Quantitative Data: Slopes