If you are reading this page, and have some time, I would appreciate help in organizing this page into useful categories! Thanks.

• http://plus.maths.org/content/ Free online publication highlighting the practical applications of mathematics. Includes mathematics-related news articles, podcasts, and mathematics puzzles designed around "real-life" scenarios.
• MathGrade: everyday math as podcasts
• Dan's MathCast: more math podcasts
• STEM Resources - Science, Technology, Engineering & Math) Education Resources
• http://www.syvum.com/math/ - quizzes   (also http://www.syvum.com/teasers/)
• and http://www.syvum.com/math/trigo/ (trigonometry)
• http://teachingcollegemath.com/?p=1898 - good advice for high school, too
• HotChalk - http://www.lessonplanspage.com/Math.htm
• UCCP Open Access Lessons: http://www.ucopenaccess.org/ 
• http://www.hippocampus.org/ 
• Create a Graph
• StudyJams
• Univ of Tennessee Math Archives
• Free Lectures through video: http://www.khanacademy.org/
• Short how-to videos at the educational site, Next Vista
• http://adifference.blogspot.com/
• http://calculationnation.nctm.org/   - recommended by Free Tech for Teachers
• http://illuminations.nctm.org/
• http://www.mathpickle.com - pose 1,000,000 questions to your math students, videos explaining math principles
• http://nlvm.usu.edu/en/nav/topic_t_1.html - a collection of manipulatives in digital format