✦ Videos, Guides & More ✦
A growing collection of free AP Physics 1 lessons, exam walkthroughs, and parent guidance from Kumu Ras Cas — no sign-up required.
Free Parent Guide
Supporting Smart Students in AP Physics 1 — A Parents' Guide
For parents of students taking or considering AP Physics 1 — understand why strong students struggle, what AP Physics 1 really requires, and the signs your child may need support.
✦ Free Video Library ✦
Physics is Phun!
See It In Action
Rotational Inertia & Angular Momentum — made fun and intuitive.
Why Students Struggle
The Old Way Is Broken
Why "Plug & Chug" no longer works on the AP exam.
See the Expertise
Real AP Exam Questions — Solved & Explained
Watch Kumu Ras Cas walk through actual past AP Physics 1 exam questions using the official College Board scoring guidelines.
Unit 2 — The M.A.P.P. Method In Action
Dynamics — Laws of Motion
A full AP Physics 1 review lesson showing exactly how the M.A.P.P. flowchart method guides students step-by-step through any problem.
Unit 3 — The M.A.P.P. Method In Action
Circular Motion & Gravitation
A full AP Physics 1 review lesson showing exactly how the M.A.P.P. flowchart method guides students step-by-step through any problem.
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