Products of total combustion Student activity Play

Products of total combustion Whiteboard exercise Play

Quantities of the same kind Student activity Play

Radiation of solids Student activity Play

Radioactivity Student activity Play

Radioactivity Animation Play

Ratio of two quantities of different kinds Student activity Play

Ratio of two quantities of different kinds Whiteboard exercise Play

Ratio of two quantities of different kinds Whiteboard exercise Play

Ratio of two quantities of the same kind Simulation Play

Ratio of two quantities of the same kind Whiteboard exercise Play

Ratio of two quantities of the same kind Student activity Play

Reacting quantities Student activity Play

Reacting quantities Whiteboard exercise Play

Reaction of zinc metal with hydrochloric acid Animation Play

Reaction rate Student activity Play

Reaction yields Student activity Play

Reaction yields Whiteboard exercise Play

Reactions between Period 3 elements and water Whiteboard exercise Play

Reactions between Period 3 elements and water (2) Student activity Play

Reactions in the gaseous phase Student activity Play

Rectilinear motion and circular motion Animation Play

Resistivity Student activity Play

Resistivity of a material Animation Play

Scalars and vectors Slideshow Play