Passage to a different medium Simulation Play

Perimeter of a rectangle Animation Play

Perimeter of a rectangle Student activity Play

Perimeter of a square Animation Play

Perimeter of a square Student activity Play

Perimeters of geometric figures Student activity Play

Perming hair and tetiary structure of keratin Animation Play

Pitfall traps Whiteboard exercise Play

Possible positions of two circles Animation Play

Properties and uses of sulphur Student activity Play

Properties of enlargements, part II Student activity Play

Property of a perpendicular bisector Animation Play

Pythagorean theorem in 3-dimensional space Whiteboard exercise Play

Pythagorean theorem in 3-dimensional space Student activity Play

Pythagorean triples Student activity Play

Radii of three circles Whiteboard exercise Play

Radioactive decay Student activity Play

Ratio of two quantities of the same kind Student activity Play

Ratios of sides in a triangle Animation Play

Reflecting telescopes Whiteboard exercise Play

Reflecting telescopes Animation Play

Reflecting telescopes Student activity Play

Regulation of body temperature Simulation Play

Regulation of body temperature Student activity Play

Regulation of body temperature Slideshow Play