There is also a link to more games and puzzles in the Mathematics Library. This website was designed by two fourth graders for fourth graders who want to sharpen their math problem-solving skills. There are word problems to solve, help solving word problems, and even a section for those wanting to donate their own word problems. This page was last revised in 1998. A meta-site with links to other math sites arranged by topic.
Topics range from arithmetic, to high school math, to higher math, to math education.
Within each topic are subtopics in an extensive table of contents. The site also has a search engine. Mathematical stumpers designed for teams of school children to solve. Problems are grouped roughly by grade level. Teachers can register their classes as teams, but any one can try the problems without competing.