Other Links
http://www.ams.org/mathmoments/Great website with podcasts talking about how math is related to the real world. Few topics discussed are music, climate change, cars, and sports.
http://www.mathwords.com/a_to_z.htmOnline glossary
http://mathschallenge.net/index.php?section=latestMath puzzles (med/hard)
http://mathbits.com/MathBits/TeacherResources/Algebra1/Algebra1.htm
Great online scavenger hunt. Students answer math questions, then retype the website address with the correct answer and it takes them to the next set of questions. This page is just Algebra, but the home page has links to a Geometry scavenger hunt.