Open access Educational Resource

This non-profit provides “open textbooks” for K-12 students all over the world. It offers free high-quality, standards-aligned, open content in the STEM subjects (science, technology, engineering, and mathematics).

Discover a meta collection of free textbooks that can be sorted by subject and grade level.

​Bookboon.com has published more than 1,000 free textbooks for students. These textbooks can be downloaded in PDF format without prior registration. We believe that students should be able to go to university without having to pay for their textbooks.