Other Problem Solving Sites

Please consider placing a link to the PSTC webpage:

Task Centre Home Base. The starting point for everything you want to know about hands-on tasks.
Point Symmetry. Hands-on problem solving related to rotation. Print your own cards.
Materials available from MAV.
21st Century Problem Solving
Ask Dr. Math A Very Good Site
Black Douglas Professional Education Services. There is a lot of practical stuff there for teachers.
Brain Teasers
Crux Mathematicorum, The Canadian Mathematical Society's Internationally Respected Problem Solving Journal
Curious and Useful Math: Clay Ford
Jorge Rezende's Polyhedra puzzles. A series of puzzles in PDF form, offered copyright free for non-commercial purposes
Math Magic
The Internet Mathematics Library Find many,many, more links here!
Nick's Mathematical Puzzles: These puzzles, for more advanced students, range over geometry, probability, number theory, algebra, calculus, and logic.
NRICH Online Maths Club: A great UK site
Problem of the Week
"Problem of the week homepage", based in South Africa.
Project of the Month
Stella (Great & Small). Software for creating polyhedra, stellated polyhedra and their nets.
"Swedish Maths Association Page", a part is about problem solving.
The Mathman : Don Cohen
The MathSoft Math Puzzle Page
The Puzzling World of Barry R. Clarke, original free brain teasers from Daily Telegraph (UK) compiler.
This Is Mega-Mathematics!
Word Problems For Kids. This site has excellent problems for grades 5-12. I used the problems with my Maths Olympiad and Maths Challenge groups Robin Vargo. (Greythorn P.S. 5/6 Coordinator)