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|A new estimation challenge every day of the school year, with accompanying video answers. Join the number sense challenge online by submitting your own estimates, explaining your reasoning ("What context clues did you use?") and rating your accuracy ("How confident are you?").|
|Levels:||Middle School (6-8), High School (9-12)|
|Resource Types:||Video, Problems/Puzzles|
The Math Forum is a research and educational enterprise of the Drexel University School of Education.