Active Calculus

Comprehensive first-year calculus textbook from OpenStax covering limits, derivatives, integrals, and their applications. Peer-reviewed and used at hundreds of universities.

Edwin Jed Herman , Gilbert Strang

Gilbert Strang's classic calculus textbook from MIT. Covers differential and integral calculus with an intuitive, application-driven approach. Available free through MIT OpenCourseWare.

Gilbert Strang

Two-volume introductory calculus covering differentiation, integration, sequences, and applications to science and engineering. Written by an emeritus professor at Old Dominion University.

J.H. Heinbockel

Tutorial-style Calculus I notes from Lamar University. Covers limits, derivatives, integrals, and applications with step-by-step worked examples throughout.

Paul Dawkins

The classic 1914 introduction to calculus, written in plain language for self-learners. Covers differentiation, integration, and their practical applications without unnecessary complexity.

Silvanus P. Thompson