Refraction of light Whiteboard presentation Play

Regular polygons – the square Student activity Play

Rotating a half-turn – symmetry with respect to a point Student activity Play

Rotation in the coordinate system Student activity Play

Rotation or symmetry? Animation Play

Rotation symmetry Animation Play

Rotational symmetry Student activity Play

Rotational symmetry of order 4 Simulation Play

Rotational symmetry of order 6 Simulation 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

Shapes that have rotation symmetry Student activity Play

Similar figures Whiteboard exercise Play

Sketching the graph of a quadratic function Student activity Play

Skewness Student activity 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