Proportions – more difficult problems Student activity Play

Protostar Animation Play

Pulsars Student activity Play

Pulsars Animation Play

Pythagoras' theorem – geometric proof Student activity Play

Pythagorean theorem in 3-dimensional space Whiteboard exercise Play

Pythagorean theorem in 3-dimensional space Student activity Play

Quadratic equation Student activity Play

Quadratic equation – example Animation Play

Radio waves Student activity Play

Reactions occurring on the surface of a solid catalyst Whiteboard exercise Play

Reactions occurring on the surface of a solid catalyst Student activity Play

Recognizing the pressure equation Whiteboard exercise Play

Red giants Animation Play

Red giants Student activity Play

Reflecting telescopes Student activity Play

Reflecting telescopes Animation Play

Reflection of light Student activity Play

Reflection of light Whiteboard exercise Play

Reflection of light at a smooth surface Animation Play

Reflection of plane waves Animation Play

Reflection of plane waves Student activity Play

Refraction Class activity Play

Regular pentagon Animation Play

Relationship between the force of friction and the roughness of a surface Animation Play