dansmath.com

Dansmath.com has 3 URLs listed in 3 Dmoz categories.

Dan's Math 4 Kids
Gives examples of ways that numbers occur in the world around us. Includes puzzles that concern numbers, geometry, speed rates, and logic.
http://www.dansmath.com/pages/danskids.html
Top/Kids_and_Teens/School_Time/Math/Math_for_Fun

Dan's Math
Includes math lessons from basic to advanced, weekly contest problems, and free tutoring by e-mail.
http://www.dansmath.com/
Top/Science/Math/Education/Homework_Help

Dansmath Problem of the Week
Weekly math problem, with solutions, archive, and leader board.
http://www.dansmath.com/probofwk/probofwk.html
Top/Science/Math/Recreations/Games_and_Puzzles/Problem_of_the_Week