Trapeziums Student activity Play

Two billiard balls collisions and the velocity vectors Whiteboard exercise Play

Two more quadrilaterals Student activity Play

Two sides of a parallelogram Simulation Play

Using the parallelogram rule Animation Play

Venn diagrams Student activity Play

Venn diagrams Whiteboard exercise Play

Volume of a prism Student activity Play

Volume of a right prism Whiteboard exercise Play

What decides whether an atomic mass is a whole number or not Animation Play

What if gases did not mix with each other? Animation Play

When does the Doppler effect not exist? Animation Play

When is 'work' not work Whiteboard exercise Play

When is 'work' not work Student activity Play

When prevention is not enough – drugs and surgery Student activity Play

When prevention is not enough – drugs and surgery Whiteboard exercise Play

When the final speed is not given Animation Play

When the Lorentz force is not acting Whiteboard exercise Play

When the Lorentz force is not acting Simulation Play

When the Lorentz force is not acting Student activity Play

Why atomic masses are not usually whole numbers? Student activity Play

Why do magnesium and chlorine form the compound MgCl2, but not MgCl? Animation Play

Why does copper not displace zinc from a solution of a zinc salt? Animation Play

Why halobenzenes do not react with ammonia? Animation Play

Why not all liquids are miscible with water? Student activity Play