• Open Textbook Library at the University of Minnesota. This is probably the best assembled collection of open resource texts out there.


• College Open Textbooks "...focused on driving awareness and adoptions of open textbooks to more than 2000 community and other two-year colleges."


• Open Text Bookstore


• Open Textbook Initiative from the American Institute of Mathematics (AIM). A number of undergraduate texts approved by the AIM editorial board.


• Dana C. Ernst A private individual's compilation of open content/source texts, leaning toward upper-level undergraduate.


• Marcel B. Finan A selection of open content texts, all written by one individual.


• George Cain Another private individual's compilation, with an emphasis toward upper level undergraduate and graduate level texts. There are a few calculus texts listed as well.


• Gregg Waterman Open source texts I have written. These are in various states of completion/revision.

Video Libraries:

• Mathispower4u My favorite producer of mathematics videos. They are very well made by a person who clearly has classroom experience.


• Patrick JMT (Just Math Tutoring). Not as slick as the above, but generally good. A student here at our school once told me that "PatrickJMT got me through calculus!"


• Khan Academy Well known and backed by Bill Gates. I find the videos a bit slow, and the presenter's lack of a teaching/tutoring background leads at times to poor presentation.


• Gregg Waterman My own Youtube channel. Nowhere near the production value of the other providers listed above, but I hope to improve my technology and presentation as time goes on.

• Wolfram Demonstrations Project Tools to illustrate concepts using animations or sliders for changing parameters. Requires downloading Wolfram CDF Player.


• Wolfram Alpha Widgets User-friendly computational tools.


• 3D Calc Plotter A tool for multi-variable calculus exploration. Requires Java player.


• Desmos An online interactive graphing tool that supports entering functions with parameters whose vlaues can changed with sliders. Does not require downloading.

Online Homework Systems:

• Webwork An open-source online homework system.


• My Open Math Another online interactive homework system.

Licensing:

• Creative Commons, perhaps the most commonly used license for open content.


• GNU Description of Copyleft, from which other GNU licensing information can be accessed.

Examples of Compiled Open Content:

• The section on solving applied optimization problems here illustrates a possibility for aggregating open content materials.


• This shows a compilation with a focus on enrichment, versus developing skills.

Miscellaneous:

• Paul's Online Math Notes A student favorite for years.


• MIT Open Courseware Perhaps more useful to us than our students?