Chad Williams
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Global Math Project
Global Math Project
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CEMC Problem of the Week
The Center for Education in Mathematics and Computing
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Proportional Reasoning
Fawn Nguyen
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Splat!
Steve Wyborney
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Numeracy Tasks
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Learn Math With Games
Janelle McFeetors
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Online Manipulatives
Chad Williams
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Matchstick Puzzles
Avi Megiddo
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541 Problems Worth Solving
Alicia Burdess
