Retina Illustration Play

Retina structure Animation Play

Riddles about 3-D shapes Whiteboard exercise Play

Riddles about 3-D shapes Student activity Play

Rods and cones Illustration Play

Rods; cones; iodopsin and rhodopsin Slideshow Play

Seed plants Whiteboard exercise Play

Seed plants Student activity Play

Seeing colours Animation Play

Seeing colours Slideshow Play

Sexual reproduction in plants Class activity Play

Sexual reproduction in plants Whiteboard presentation Play

Significance of cell specialization Student activity Play

Significance of cell specialization Whiteboard exercise Play

Similar cones Whiteboard exercise Play

Similar prisms and pyramids Student activity Play

Similar spheres, cylinders and cones Student activity Play

Solid of revolution Animation Play

Solids considered by Archimedes Whiteboard exercise Play

Structural isomerism in alkenes involving a positions of the double bond Student activity Play

Structural isomerism in alkenes involving a positions of the double bond Simulation Play

Surface area of a cone – a conical paper cup Whiteboard exercise Play

Surface area of a cone – a party hat Whiteboard exercise Play

Surface area of a cone – cans Whiteboard exercise Play

Surface of a cone Student activity Play