Open Access, Open Education, & More: Mathematics

This is a list of open-source textbooks approved by the American Institute of Mathematics.

"GeoGebra is free and multi-platform dynamic mathematics software for all levels of education that joins geometry, algebra, tables, graphing, statistics and calculus in one easy-to-use package. It has received several educational software awards in Europe and the USA."

Open textbook written by Profs. Thomas Tradler and Holly Carley at City Tech.