A fake force gauge Animation Play

A house in an amusement park Animation Play

A trip to Mars Animation Play

A trip to the Moon Simulation Play

A trip to the Moon Whiteboard exercise Play

A trip to the Moon Student activity Play

An apple Animation Play

Apparent weightlessness Student activity Play

Apparent weightlessness Whiteboard exercise Play

Attraction between point masses and homogeneous balls Student activity Play

Attraction between point masses and homogeneous balls Whiteboard exercise Play

Bodies falling on the Moon Whiteboard exercise Play

Bodies falling on the Moon Simulation Play

Bodies falling on the Moon Student activity Play

Cavendish's experiment Animation Play

Celestial bodies Animation Play

Changes in energy Animation Play

Comparison of gravitational forces and the forces of friction Animation Play

Do any two balls attract one another? Student activity Play

Do any two balls attract one another? Whiteboard exercise Play

Does a man attract the Earth? Whiteboard exercise Play

Does a man attract the Earth? Student activity Play

Electric field versus gravitational field Animation Play

Electric field versus gravitational field Whiteboard exercise Play

Electric field versus gravitational field Student activity Play