AP Calculus AB Progress Check walkthroughs.
Unit-by-unit explanations of the MCQ and FRQ content on AP Classroom Progress Checks. Each unit page shows the topics tested, the most common student mistakes, and a tip from someone who scored a 5.
All units, expandable.
Click a unit to see MCQ topics, FRQ structure, common mistakes, and a tip from a student who scored a 5.
U01Limits and Continuity
- Limit notation
- One-sided limits
- Continuity types
- Algebraic limit manipulation
U02Differentiation: Definition
- Limit definition of f′
- Tangent slopes
- Justify differentiability via limits
U03Differentiation: Composite
- Chain rule
- Implicit differentiation
- Inverse functions
- Multi-step chain rule with trig
U04Contextual Applications
- Related rates
- Linear approximation
- Motion on a line
- Related rates word problems
U05Analytical Applications
- Extrema
- Concavity
- MVT
- Justifying extrema with sign analysis
U06Integration & Accumulation
- Riemann sums
- FTC
- u-substitution
- Accumulation function problems
U07Differential Equations
- Slope fields
- Separation of variables
- Solving for the particular solution
U08Applications of Integration
- Average value
- Area between curves
- Volumes
- Volume by disks/washers/shells
Pair the walkthrough with the calculator.
After each unit, plug your AP Classroom score breakdown into the calculator. You’ll see your trajectory in real numbers, not vibes.
Open Calc AB calculatorFrequently asked questions
Quick answers — written by humans, not a chatbot.
What's the difference between Calc AB Progress Checks and the real AP exam?
Progress Checks are unscaled — they’re unit-by-unit MCQ + FRQ practice that AP Classroom assigns. The real AP exam uses a curve to map your raw composite to a 1–5. The walkthroughs above explain the reasoning; the calculator estimates your exam score.
Should I do every Progress Check or skip around?
Do them in order the first time — each one builds on the last. If you’re reviewing in May, target the units where you’re weakest using the unit summaries above.
Why don't you publish exact answer keys?
AP Classroom assignments are graded as your own work. Posting raw keys would help cheaters and harm the students using Curve for actual studying. Our walkthroughs explain reasoning, not letter answers.