Regular tetrahedrons Student activity Play

Repulsion between current-carrying conductors Animation Play

Riddles about 3-D shapes Student activity Play

Riddles about 3-D shapes Whiteboard exercise Play

Right hand rule Animation Play

Right prisms Whiteboard exercise Play

Right-angled triangle or not? Animation Play

Sections of a cube Student activity Play

Similar prisms and pyramids Student activity Play

Similar solids and their volumes Student activity Play

Solving problems involving trigonometric ratios Whiteboard presentation Play

Solving problems involving trigonometric ratios Class activity Play

Solving triangles Whiteboard exercise Play

Solving triangles Student activity Play

Stationary waves Animation Play

Stationary waves Student activity Play

Stick the cubes Whiteboard exercise Play

Structure of the heart Slideshow Play

Structure of the heart and blood flow through the heart Whiteboard exercise Play

Surface area of a cube Animation Play

Surface area of a cube – part 1 Student activity Play

Surface area of a cuboid – part 1 Student activity Play

Surface area of a pyramid – exercises Student activity Play

Surface area of a right, regular pyramid Whiteboard exercise Play

The converse of the Pythagorean theorem Student activity Play