Intersect Prep

Built for the May 2027 exam

Learn all of AP® Calculus AB and practice in the real exam format

Your first calculus course, built for the AP exam. Desmos is there on the calculator sections, and most of your score still comes from working by hand. Learn both, then level up with practice that feels like a game.

Full access is $44 for 6 months or $34 for 3 months, in one payment with no subscription, and you can refund it yourself within 7 days. See what's included

Try it: solve this one yourself

Easy
f(x)=4x−x2f(x) = 4x - x^2

For what value of xx is f′(x)=0f'(x) = 0?

Desmos move: click the top of the curve on the graph to read it.

practice questions
440
practice questions
interactive lessons
45
interactive lessons
course units
8
course units
questions in a full practice exam
48
questions in a full practice exam

See it in action

Learn with a graph you can move

Every AP Calculus AB lesson has a live Desmos graph, so you can change a value and watch the calculus happen.

Practice like the real exam

Answer exam-style questions and get a full solution. On no-calculator questions, Desmos stays closed unless you choose to open it after a miss.

Who made this

Built by a tutor who earned a 5

I'm Emmett Funston, a tutor studying electrical engineering at Northwestern University. My brother, also an EE student there, also reviewed these problems.

My AP Calculus BC score, with a 5 AB subscore
5
My AP Calculus BC score, with a 5 AB subscore
My brother's AP Calculus BC score, with a 5 AB subscore
5
My brother's AP Calculus BC score, with a 5 AB subscore

These are our own scores, not results from using this course. Scores vary, and we can't promise any particular score. Northwestern University isn't affiliated with this site.

Your path to exam day

Always know what to do next

  1. Step 1Learn the calculus
  2. Step 2Practice
  3. Step 3Beat the clock
  4. Step 4Fix your misses

Practice that feels like progress

Earn XP. Keep your streak. Unlock achievements.

Every multiple-choice question you solve on your own and every timed set moves you forward. Hints cost half the XP, so your level reflects what you can really do.

  • Instant feedback and a full solution
  • Daily streaks that reward showing up
  • 10 achievements to collect

Practice in the real exam format

About two-thirds of your score comes from questions with no calculator, so on timed exams Desmos stays off the screen for those parts, just as it will on exam day.

PartQuestionsTimeCalculatorScore
Section I, Part A29 multiple choice62 minNo35%
Section I, Part B13 multiple choice38 minYes15%
Section II, Part A2 free response30 minYes16.7%
Section II, Part B4 free response60 minNo33.3%

Free-response answers are handwritten on the exam. Here you work on paper, then score yourself point by point against a rubric.

Every unit on the exam

400 multiple-choice and 40 free-response questions, from easy to hard, each with a full solution.

Unit 1: Limits and Continuity

10–15% of multiple choice

Unit 2: Differentiation: Definition and Fundamental Properties

10–15% of multiple choice

Unit 3: Differentiation: Composite, Implicit, and Inverse Functions

5–10% of multiple choice

Unit 4: Contextual Applications of Differentiation

10–15% of multiple choice

Unit 5: Analytical Applications of Differentiation

15–20% of multiple choice

Unit 6: Integration and Accumulation of Change

15–20% of multiple choice

Unit 7: Differential Equations

5–10% of multiple choice

Unit 8: Applications of Integration

10–15% of multiple choice

Buying for your student?

  • One payment covers 3 or 6 months of access. Nothing renews, and there's no subscription to cancel.
  • Changed your mind? Refund it yourself from the Account page within 7 days.
  • Progress is saved to your student's account on every device.

Ready to start Unit 1?

Start with the first lesson: a short read and a live example.

Full access is $44 for 6 months or $34 for 3 months, in one payment with no subscription, and you can refund it yourself within 7 days. See what's included

Taking a different exam?

See SAT Math, AP Precalculus, or the full AP Calculus BC course.