Free math book published because they think textbook prices are too high…
“With the current price of a new algebra textbook approaching $110 and publishers bringing out a new edition every three to four years just to prevent students from selling their used books, we have decided to create a site where the textbooks are free.”
They only have one up right now but plan to add more, along with video and audio lectures.
view and download this textbook at totallyfreemath.com
Here are some more links for free text book resources…
http://www.physicsforfree.com/ (three physics books from beginning physics to general relativity).
http://www.lightandmatter.com/area1.html (six physics books, variety of topics)
http://www.motionmountain.net/ (notably one of the best free physics books ever “published”).
http://www.math.wisc.edu/~keisler/calc.html (intro to calc book under Creative Commons)
http://www.allaboutcircuits.com/ (a really cool free circuit design book).
http://www.gutenberg.org/ (obligatory gutenburg link, aggregator of books out of copyright or otherwise set free).
There is also the Open Courseware series, free and complete with materials, tests, and everything you need online. Some even come with video casts of the classes, others come with podcasts!
Open Courseware Class Finder: http://opencontent.org/ocwfinder/
MIT’s OCW http://ocw.mit.edu
more…
* Carnegie Mellon: Open Learning Initiative http://www.cmu.edu/oli/
* Foothill-De Anza Community College District: Sofia Project http://sofia.fhda.edu/
* Johns Hopkins Bloomberg School of Public Health: JHSPH OpenCourseWare http://ocw.jhsph.edu
* Tufts University: Tufts OCW http://ocw.tufts.edu/
* University of California, Berkeley: UC Berkeley on iTunes U http://itunes.berkeley.edu/
* Utah State University: USU OpenCourseWare http://ocw.usu.edu/Index/ECIndex_view
* International Institute of Management IIM: IIM OpenCourseWare http://opencourseware.iim-edu.org/
Then, there is wikibooks…
http://en.wikibooks.org/wiki/Wikibooks_portal
I hear the Organic Chem Wikibook is pretty good.
http://en.wikibooks.org/wiki/Organic_Chemistry