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Human Genetic Variation offers activities exploring how genes and the environment influence human diversity, what...

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MegaMath presents important mathematical ideas and allows students and teachers to experience math...

Six Elephant on Triangle.  The triangle is still standing because the pulling force in the bottom side is balancing the pushing forces in the upper sides.

Building Big Labs helps kids think about structures they see every day and the impact of technology on...

Image that displays the Law of Cosines

USA Mathematical Talent Search is a mathematics competition open to all U.S. middle and high school students. Problems...

National Institutes of Health

Multiple Agencies

Endowment for Humanities

National Security Agency
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