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|A mathematical question-and-answer service on the Web that offers: free help with math questions; searchable archives; a "best-of" page (The Counterfeit Penny; Buildings and Ladders; The Magnificent Seven; The Hole Problem; Factor This; Rock Star Shuffle; Harder Than It Looks; Crazy Dice; Irrational Exuberance; The Notorious Jumping Function of Continuum County; The Nasties of the Round Table; Pell Mell; The Buckled Rail; Chipping N; McNuggets; The Case of the Missing Mangos); several mathematics-related columns; and the opportunity to volunteer as a MathNerd.|
|Levels:||Elementary, Middle School (6-8), High School (9-12), College|
|Resource Types:||Problems/Puzzles, Question and Answer Services, Articles|
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