Planets visible from the Earth Animation Play

Plasma: the fourth state of matter Student activity Play

Potential energy near the surface of the Earth Animation Play

Predicted effects of global warming Slideshow Play

Pressure and altitude Student activity Play

Prices Whiteboard exercise Play

Prices Student activity Play

Propagation of seismic waves Student activity Play

Protective earth conductor Animation Play

Pulsar signal Whiteboard exercise Play

Pulsars and black holes Student activity Play

Quartile coefficient of skewness Student activity Play

Radiation Student activity Play

Recent changes in the Earth's temperature Slideshow Play

Relationship between the period of revolution and the orbital radius Illustration Play

Rocky planet Chart Play

Rocky planets and gas giants Whiteboard exercise Play

Roemer's proof Student activity Play

Roemer's proof Whiteboard exercise Play

Rounding decimals to 0.01 Student activity Play

Rounding decimals to the nearest 0.01 Whiteboard exercise Play

Rounding natural numbers to the nearest 10 Student activity Play

Salts occurring naturally Slideshow Play

Satellite television Student activity Play

Satellites Class activity Play