Puzzle Archive for middle school and high school math is an index of 24 categories of puzzles with solutions categorized by subject area. Among the categories are arithmetic, cryptology, probability, geometry and logic. Puzzle Of The Week. Puzzle Of The Week provides a collection of puzzles from Round 1 and Round 2 of an online contest for students in grades 4-8. Puzzle Page, created by Eric Ward, is a collection of math puzzles and riddles for grades 4-8.
Kids can request the answers through email.
Puzzler offers riddles contributed by girls for students in grades 3-6. Puzzles and Mind Teasers. Puzzles and Mind Teasers features a monthly teaser for kids in grades 4-8 where answers can be submitted via email. The previous month's puzzle and solution is provided. Kids are also invited to submit their own brain teasers.