Wolfram Demonstrations Project

A cube with a spherical void is divided into two congruent parts. One of the halves can be rotated along an edge as a lid of a box.

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Common Core State Standards for Mathematics

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Wolfram Blog » Read our views on math, science, and technology.	Computable Document Format » The format that makes Demonstrations (and any information) easy to share and interact with.	STEM Initiative » Programs & resources for educators, schools & students.	Computerbasedmath.org » Join the initiative for modernizing math education.

Ball in a Box