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Top: Science: Math: Recreations: Games_and_Puzzles: Problem_of_the_Week:
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» Math Forum: Problems of the Week - Projects from the Math Forum presenting weekly interactive math challenges to accumulate points for bronze, silver and gold prizes. Individual or class participation. Paid membership required to view problems.
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» Math Magic - Devoted to original mathematical recreations with puzzles and links.
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» PuzzleUp - Weekly math problem with archive and scoreboard.
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