Reflection symmetry of a figure in the coordinate system Whiteboard exercise Play

Reflection symmetry of the triangle – the coordinates of the vertices Whiteboard exercise Play

Reflections Student activity Play

Reflections Whiteboard exercise Play

Reflectors Whiteboard exercise Play

Reflectors Slideshow Play

Reflectors Student activity Play

Refraction Class activity Play

Refraction of light Class activity Play

Refraction of light Student activity Play

Refraction of light Whiteboard presentation Play

Rutherford's atomic model Student activity Play

Rutherford's experiment Animation Play

Rutherford’s atomic model Simulation Play

Rutherford’s atomic model Whiteboard exercise Play

Shapes that have reflection symmetry Student activity Play

Similar figures Whiteboard exercise Play

Soap bubble Animation Play

Sound Class activity Play

Sources of plane waves Student activity Play

Sources of plane waves Simulation Play

Speed of light in transparent materials Illustration Play

Spherical mirror Animation Play

Spherical mirrors Student activity Play

Spherical mirrors Whiteboard exercise Play