Science Books Online is a directory of free ebooks for all areas of science. The books range from small PDF pamphlets to full-length texts made available in electronic form for free. Most of the materials have to be downloaded in order to be viewed but there are some materials that you can view directly within your browser.

Applications for Education
Science Books Online and similar ebook directories can provide excellent supplemental materials for your curriculum at no cost. In some cases you may even be able to find ebooks that can replace your textbooks and save your school thousands of dollars.