Precalculus — Mathematics for Calculus
The bridge from algebra to calculus, built on functions and trigonometry.
This is a full precalculus course built from Stewart, Redlin and Watson's well-known textbook, Precalculus: Mathematics for Calculus. It runs over two semesters of twelve weekly classes each -- one class every Saturday, a single two-to-three hour session -- and takes you from a solid grip on functions all the way through trigonometry and a first look at the limits calculus is built on. Each Saturday you watch that week's video together, a moderator answers your questions as you go, and you work real problems with Claude Code at your side to check every step, so you walk into calculus ready.
Two semesters, 24 classes in all, one class a week -- a single two-to-three hour Saturday session. The syllabus is open to everyone; each class's lesson opens for subscribers. It is included in the one $13.99/month subscription.
Semester 1Functions and Trigonometry
You review the functions from algebra quickly, then spend most of the term on the heart of precalculus: trigonometry -- angles, the unit circle, and the sine and cosine that describe anything that repeats.
See the 12 classes →Semester 2Trig Identities, Polar, and a Preview of Calculus
You go deeper into trigonometry -- right triangles, the laws of sines and cosines, identities and equations -- then meet polar coordinates, vectors, conic sections and sequences, and finish with a first real look at the limits that calculus is built on.
See the 12 classes →