AP Precalculus 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.
U01Polynomial and Rational Functions
- Polynomial behavior
- Asymptotes
- Rational functions
- End behavior analysis
U02Exponential and Logarithmic Functions
- Exponential growth/decay
- Log properties
- Inverse
- Half-life modeling
U03Trigonometric and Polar Functions
- Unit circle
- Inverse trig
- Polar
- Sine/cosine transformations
U04Functions Involving Parameters, Vectors, and Matrices
- Parametric
- Vectors
- Matrices
- Parametric motion
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 Precalc calculatorFrequently asked questions
Quick answers — written by humans, not a chatbot.
What's the difference between Precalc 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.