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// ENGLISH
Discovering Gravitational Waves

Discovering Gravitational Waves

This hands-on activity uses simple materials to model space-time and the effect... Read More
// ENGLISH
Why Can't You Escape from a Black Hole?

Why Can't You Escape from a Black Hole?

How can your students use a water fountain to understanding... Read More
// ENGLISH
Measuring Planck's Constant

Measuring Planck's Constant

Students use a simple circuit and LEDs to measure Planck's constant, h,... Read More
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What Keeps Us Stuck to Earth?

What Keeps Us Stuck to Earth?

Students examine and compare two models of gravity: Newton‰۪s classical force model... Read More
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Where Does Energy Come From? (Extended Lesson)

Where Does Energy Come From? (Extended Lesson)

Students use logic to work through thought experiments involving relative reference frames... Read More
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Satellite Motion and Free Fall

Satellite Motion and Free Fall

Students explore how GPS satellites determine the location of a receiver on... Read More
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GPS and Relativity

GPS and Relativity

Students investigate how GPS depend on Einstein‰۪s theories of general and special... Read More