Pulsars Animation Play

Pulsars Student activity Play

Pythagorean theorem in 3-dimensional space Whiteboard exercise Play

Pythagorean theorem in 3-dimensional space Student activity Play

Quadratic functions, graphs Whiteboard presentation Play

Quadratic functions, graphs Class activity 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

Reading the solubility curve Animation 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

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

Relationship between the force of friction and the surface area Animation Play

S-shaped curve Animation Play

Satellite telephones Student activity Play

Sections of a cube Student activity Play