C-ID Atlas · California Community CollegesVerified worksheet engine

Your California college math course — to learn it or to teach it.

Type your local course number. Students get video lessons, worksheets, and self-checking practice. Instructors get the same lessons plus ready-made, randomized tests with verified answer keys. All free and mapped to the statewide C-ID standard — so whatever your college calls the course, you're in the right place.

For students — learn & practice

Find your course, then watch short video lessons, download worksheets with answer keys, and take instant self-checking practice quizzes. Free, no login.

▶ Watch📄 Worksheet✅ Practice quiz
For instructors — teach & assess

Use the videos in class or Canvas, hand out ready-made worksheets, and generate randomized tests with verified answer keys — all aligned to your course's official C-ID topics.

Canvas-ready📝 Test generatorVerified keys
116California community colleges
17C-ID math courses mapped
OERfree & openly licensed
EN · FILbilingual video lessons
Created by Dr. Peter Esperanza — math faculty at Barstow Community College, Victor Valley College & West Coast University

A registered 501(c)(3) nonprofit since 2023 · free to use, share, and adapt (CC BY)

Find your course

Type your college's local course number (e.g. STAT 100, MATH 60) or a topic. We'll point you to the matching C-ID course.

C-ID numbers are statewide. Local numbers vary by college — they all map to the same standard course.
AB 1705 Teaching under AB 1705? Get free corequisite & just-in-time support — algebra, trig, and precalculus review ready to drop into your transfer-level course. Explore support →