Keith's Think Zone
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|Fun math miscellany about number sets, n-dimensional hyperspheres and hyperballs, big numbers, areas and volumes, angles — the revolution, shortcut arithmetic, and more. See, in particular, the brain teasers "deadly disease puzzler" and "the world's hardest easy geometry problem."|
|Levels:||Elementary, Middle School (6-8), High School (9-12)|
|Math Topics:||Arithmetic/Early Math, Higher-Dimensional Geometry, Euclidean Plane Geometry, Sequences and Sets, Statistics|
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