A study map for every unit: 3Blue1Brown for intuition, Professor Leonard for the full lesson, your textbook section, your teacher's notes — then CED-aligned MCQs to check it stuck. Progress saves on this device.
Each map is an interactive tree. Click a topic to watch the matching videos, find the textbook section, read your teacher's notes on it — then answer AP-style questions. The % badge is that unit's weight on the exam.
Once a unit feels solid, work real free-response questions and learn exactly how the exam is scored — including what changes in May 2027.
All six official 2025 free-response questions mapped to their units and skills — what each part tests, where students lose points, and a link to the real PDF to try under time.
Current format: 45 MCQ + 6 FRQ over 3¼ hours, 50/50 split. College Board updates MCQ count and timing starting May 2027 — exactly your exam year. What we know, and your teacher's exam-day tips.
Built by a dad for his daughter — a summer head-start that becomes a school-year study companion, and a sprint tool when May comes. No accounts, no tracking, no ads. apcalc@6ray.com
Sources & credits: structure and weights follow the College Board AP Calculus AB Course & Exam Description; teacher's notes courtesy of Rachel Yu; textbook references point to Anton, Bivens & Davis, Calculus: Late Transcendentals 11e (Wiley) — the classroom text; study resources include Khan Academy, Calc Medic, 3Blue1Brown (Essence of Calculus), Professor Leonard, The Organic Chemistry Tutor, and TI in Focus (see the resource guide). This is an independent study aid, not affiliated with College Board.