Free for students · Ad-free · WCAG 2.1 AA Compliant · Accessibility
Advanced Placement · College Board

AP Calculus AB
Free study guide.

Limits, derivatives, integrals, FTC.

Units
10
Lessons
107
Study time
5.3 hrs

Exam format: 45 multiple-choice questions and 6 free-response questions, 3 hours and 15 minutes total

What you'll get

Built for how you actually study

Every lesson has a clear concept overview, a worked example, common mistakes, and AP-realistic practice. Read it. Listen to it. Try it.

Listen as you read

Every lesson narrated. Built for screen readers, with a one-tap Listen button for any block.

Diagrams, not just words

Concept overviews, flow diagrams, worked examples — designed for visual + auditory learners.

AP-realistic practice

8 MCQs per lesson + full mock exams. Hidden until you reveal. Track your accuracy over time.

Course outline

10 units · 107 lessons

Click any unit to see its lessons. Unit weights show how much of the AP exam tests each unit.

Unit 1

Limits and Continuity

Exam weight 10-12% (AB), 4-7% (BC)
Lessons 14
Time 141m
Live 14/14
Unit 2

Differentiation: Definition and Fundamental Properties

Exam weight 10-12% (AB), 4-7% (BC)
Lessons 10
Time 100m
Live 10/10
Unit 4

Contextual Applications of Differentiation

Exam weight 10-15% (AB), 6-9% (BC)
Lessons 7
Time 31m
Live 0/7
Unit 5

Analytical Applications of Differentiation

Exam weight 15-18% (AB), 8-11% (BC)
Lessons 12
Time 0m
Live 0/12
Unit 6

Integration and Accumulation of Change

Exam weight 17-20% (AB), 17-20% (BC)
Lessons 13
Time 0m
Live 0/13
Unit 7

Differential Equations

Exam weight 6-12% (AB), 6-9% (BC)
Lessons 9
Time 0m
Live 0/9
Unit 8

Applications of Integration

Exam weight 10-15% (AB), 6-9% (BC)
Lessons 13
Time 0m
Live 0/13
Unit 9

Parametric Equations, Polar Coordinates, and Vector-Valued Functions (BC ONLY)

Exam weight 11-12% (BC ONLY)
Lessons 9
Time 0m
Live 0/9
Unit 10

Infinite Sequences and Series (BC ONLY)

Exam weight 17-18% (BC ONLY)
Lessons 15
Time 0m
Live 0/15
FAQ

Common questions

Is this course really free?
Yes — every lesson, every MCQ, every mock exam is free. No premium tier, no ads, no selling student data. AP CED is published by College Board; our adaptation and lessons are licensed CC BY-NC-SA 4.0.
Is this aligned to the current College Board CED?
Yes. This course follows the 2020-21 College Board CED. View the official CED → Every lesson maps to a specific Essential Knowledge topic.
How long does it take to finish this course?
With 107 lessons averaging about 3 minutes each, the full course is roughly 5.3 hours of study. Most students spread it across the semester. For exam-week review, use the Crash Course instead.
What if I can't see well, or use a screen reader?
Every lesson is built screen-reader friendly with proper headings, alt text on diagrams, and one-tap audio narration. WCAG 2.1 AA compliant. Use the Accessibility menu in the top bar to enlarge text, change contrast, switch to a dyslexia-friendly font, or have the page read aloud.
Do you have practice tests?
Yes — 8 AP-realistic MCQs at the bottom of every lesson, plus a full Mock Exam for this course. The mock matches the real exam's format (MCQ counts + FRQ patterns) and gives you a predicted score.