Mersenne Primes Join over 5000 of your fellow number theory enthusiasts in the search for new Mersenne primes. The goal of this web site is to test every Mersenne number with an exponent less than 20,5000,000. Middle School Problem of the Week gr. 7-8 Interactive maths problems and puzzles from Swarthmore School. Quia Math Quia is a treasure trove of more than thirty math activities which include flashcards and a Concentration-style matching game.
Topics range from basic addition to algebra terminology.
Don't miss the Math Journey, where students can travel around the world as they practice addition, subtraction, multiplication, division and rounding at four levels. All the formulas you've ever wanted. There are also plenty of great teacher resources, pictures describing geometrical functions, and computer programs for geometry. The Hall of Mathematics Links to Secondary Math, Integrating Math with Science, Math History, and Educational support. The links are all well annotated.