Reflection Student activity Play

Reflection of light Class activity Play

Reflection of light Whiteboard presentation Play

Reflection symmetry in the coordinate system in the x-axis and the y-axis Student activity Play

Refracting telescope Student activity Play

Refracting telescope Whiteboard exercise Play

Refraction Class activity Play

Refraction diagrams Student activity Play

Resolution of optical devices Animation Play

Resolution of optical devices Student activity Play

Rotation in the coordinate system Whiteboard exercise Play

Rotation in the coordinate system Student activity Play

Rotation is a transformation Student activity Play

Rotation or symmetry? Animation Play

Sharp image Whiteboard exercise Play

Short-sightedness Animation Play

Sight defects Simulation Play

Sight defects Student activity Play

Sight defects Student activity Play

Signal encoding Whiteboard presentation Play

Signal encoding Class activity Play

Sizes of objects Student activity Play

Spectacles Simulation Play

Spectacles Student activity Play

Spherical mirrors Class activity Play