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|A new challenge is posted each Monday for students in elementary, middle, and high school. Type in your numerical answer, and the site checks it for you. Also see the Open Challenge and the archive of past problems, which date back to August, 2004, and are also available with interactive answer-checking.|
|Levels:||Elementary, Middle School (6-8), High School (9-12)|
|Resource Types:||Problems/Puzzles, Daily/Weekly/Monthly Challenges|
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