Free Textbooks for Textbook Addicts.
Archive.org has some nice antique books, you know the textbooks that were used when kids were taught to think and education wasn't married to entertainment! Search for key words like arithmetic, grammar, speller, reader, or the writer of a book like McGuffey's or Ray's and you will come up with some wonderful old textbooks. you can also search your grade like this "grade 1" or "first grade" but make sure you include the " marks".
In your course description you should mention that the course included up to date materials as well incase your reviewer has been influenced by the edutainment society we live in.

Google Books is a great place to search if you know your title.

Here are 6 Physics and Astronomy Textbooks.

The National Academy Press allows you to download their books for free but they only allow you to do it one page at a time. I used pdfedit to put them back together into books.

The Curriculum Improvement Project has highschool Leveled Texts.

Wowio allows you to download Three Free books per day. These are CURRENT books!

The US Air Force has a number of free books on passing Tests.

XP Math offeres several pages worth of books they have math, tech,  and other books

make your worksheets POSTER size for covering them at the co-op!

Honorable Mention

1. Enchanted Learning has thousands of worksheets on nearly every subject.
   
2. Craig's List is an awesome place to look for free curriculum. Many used textbooks can be found here!
   

Other Full Curriculum Pages

Last updated Feb 14 2008

I do not believe in reinventing the wheel. There are sites besides mine that have worked to get you a free full curriculum. They are good sites although you may need to adjust the Religious assignments to fit your personal Program.

Ambleside Online

Old Fashioned Education

This site is Tricky in that before it opens fully it goes to another site. It is the Full Chicago Curriculum.
As soon as you see the page hit stop to keep it from opening then save it to a folder on your computer. open it from there next time rather than the web!


Let me know if you have others I'll be happy to include them.