A plane and the wind Student activity Play

A plane and the wind Whiteboard exercise Play

A planetary nebula NGC 6543 Illustration Play

A points and a circle Whiteboard exercise Play

A polygon inscribed in a circle Student activity Play

A polynomial and its different divisors Whiteboard exercise Play

A population of flies Whiteboard exercise Play

A prism Student activity Play

A prism Slideshow Play

A prism Whiteboard exercise Play

A proof for rapid exchange of hydrogen atoms in hydroxyl groups Slideshow Play

A pulley Animation Play

A quadrilateral inscribed in a circle Whiteboard exercise Play

A radiator Student activity Play

A radiator Whiteboard exercise Play

A ragworm Whiteboard exercise Play

A range of sizes Animation Play

A rational expression and its simpler form Animation Play

A rational function Student activity Play

A rectangular fence Animation Play

A rectifying system Student activity Play

A rectifying system Animation Play

A rectifying system Whiteboard exercise Play

A refracting telescope Student activity Play

A refracting telescope Animation Play

A refracting telescope Whiteboard exercise Play

A regular arrangement of the substituents Animation Play

A regular pentagon Student activity Play

A rigid solid and its motion Student activity Play

A rigid solid and its motion Whiteboard exercise Play