This is a quick post to share with you this interesting resource we came across awhile ago. This is a collection of more than 60 free math textbooks, or what is conventionally known as open textbooks, that you can probably use in your instruction. The collection, provided by Open Culture, is organized alphabetically and covers a wide range of math topics from abstract algebra to computational geometry. Some of these textbooks are available for free download in PDF format, others can be read online. We have checked some of the links there and they seem to work pretty good. You may want to spend sometime going through the collection to see if you find anything that works for your class. Check out the list from this page. Enjoy
