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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 of Spacecraft Structures Design Challenge cover

Engineering Design Challenges presents challenges faced by NASA engineers who are developing the next generation of...

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Games: Central Intelligence Agency challenges students to look at an aerial view of a city and determine what is happening...

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...


Endowment for Humanities

NASA

Central Intelligence Agency

National Security Agency
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