Radiation of solids Student activity Play

Reaction mechanisms Student activity Play

Reactions in the gaseous phase Student activity Play

Reading from the graph of the cosine function Student activity Play

Real gases Student activity Play

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

Reflection symmetry in the horizontal axis Whiteboard exercise Play

Reflection symmetry in the vertical axis Whiteboard exercise Play

Reflections Student activity Play

Reflections Whiteboard exercise Play

Relative abundance of isotopes and mass spectra Student activity Play

Relative atomic mass and relative molecular mass Animation Play

Relative atomic mass and relative molecular mass Whiteboard exercise Play

Relative atomic mass and relative molecular mass Student activity Play

Relative molecular mass Student activity Play

Relative molecular mass Student activity Play

Relative molecular mass Whiteboard exercise Play

Relative molecular mass Animation Play

Representations Class activity Play

Representations Whiteboard presentation Play

Resolution of optical devices Student activity Play

Resolution of optical devices Animation Play

Rotations Simulation Play

Rotations Student activity Play

Scale factor Whiteboard exercise Play