A complete map of the course. Free chapters are unlocked from the start; paid chapters require a one-time purchase.
The foundation: coordinates, slope, and what makes something a function.
From parabolas to higher-degree behavior — and complex numbers when zeros go imaginary.
Growth, decay, and the inverse relationship that powers them.
Angles, the unit circle, and graphs of sine, cosine, and friends.
Identities, equations, and the formulas that unlock harder problems.
Beyond right triangles — and a first look at vectors and polar form.
Solve big systems — and meet the algebra of matrices.
Patterns in numbers, sums, induction, and combinatorics.
Curves that don't fit y = f(x) — and the coordinate systems built for them.
Step into 3D — coordinates, vectors, lines and planes.
Where precalc ends and calculus begins.
Bonus reference — pick up calculator skills as you need them across the course.