- Precalculus
Openstax College Textbook – PDF 81.5 MB
- Prealgebra
Openstax College Textbook – PDF 15.5 MB
- Formal Logic
An Introduction to Formal Logic Textbook – PDF 639 KB
- Sets, Logic, Computation
Open Logic Text – PDF 2.8 MB
- Introductory Statistics
Openstax Textbook – PDF 7.7 MB