Reasoning with angles Whiteboard exercise Play

Recognition of congruent triangles Animation Play

Rectilinear motion and circular motion Animation Play

Reduction formulas due to periodicity Whiteboard exercise Play

Reduction formulas due to periodicity Student activity Play

Reduction formulas for the cosine Animation Play

Reduction formulas for the sine Animation Play

Reflection Student activity Play

Reflection and refraction of waves Whiteboard presentation Play

Reflection and refraction of waves Class activity Play

Reflection and refraction of waves Whiteboard presentation Play

Reflection and refraction of waves Class activity Play

Reflection of light Student activity Play

Reflection of light at a smooth surface Animation Play

Reflection of plane waves Student activity Play

Reflection of plane waves Animation Play

Reflectors Whiteboard exercise Play

Reflectors Student activity Play

Reflex angles Student activity Play

Reflex angles Animation Play

Reflex angles – activity Whiteboard exercise Play

Refraction of light Student activity Play

Refraction of plane waves Whiteboard exercise Play

Refraction of plane waves Student activity Play

Refraction of plane waves Simulation Play