Provision and emission of heat Whiteboard exercise Play

Provision and emission of heat Student activity Play

Pulsars Animation Play

Pulsars Student activity Play

Pumping up a tyre Simulation Play

Radiation Whiteboard exercise Play

Radiation Animation Play

Radiation Student activity Play

Radiation of solids Student activity Play

Radiation of solids Whiteboard exercise Play

Rate of change in the exponential function Simulation Play

Rate of change in the function y = ln|x| Whiteboard exercise Play

Rate of change in the natural logarithmic function Simulation Play

Rate of change on the straight line Whiteboard exercise Play

Rate of change on the straight line Student activity Play

Rates of change Whiteboard presentation Play

Rates of change Class activity Play

Ratio of two quantities of different kinds Whiteboard exercise Play

Ratio of two quantities of different kinds Student activity Play

Ratio of two quantities of the same kind Student activity Play

Ratio of two quantities of the same kind Simulation Play

Reaction conditions and enthalpy change Slideshow Play

Reaction course under changing environmental conditions Animation Play

Reaction of sodium with water Animation Play

Reaction of sodium, magnesium and aluminium with water Animation Play