The angular velocity vector Animation Play

The apparent movement of the stars Student activity Play

The causes and control of plant diseases Slideshow Play

The cock on the roof Animation Play

The cone Student activity Play

The cone Simulation Play

The correct perpendicular lines Whiteboard exercise Play

The dangers of using inorganic fertilizers Slideshow Play

The direction of the Earth's rotation Whiteboard exercise Play

The Doppler effect Student activity Play

The Doppler effect Simulation Play

The Earth's gravitation Animation Play

The Earth's rotation Animation Play

The equilibrium of the moments of the forces Animation Play

The force of gravity Animation Play

The formula for the space diagonal of a cube Student activity Play

The function of a commutator Animation Play

The highest speed Whiteboard exercise Play

The largest planetoids Chart Play

The law of gravitation and Kepler's Third Law Student activity Play

The measurement of the speed of light conducted by Fizeau Animation Play

The mechanism of tides Animation Play

The Milky Way Student activity Play

The Milky Way Whiteboard exercise Play

The Moon in its orbit Animation Play