An object brought closer to the mirror Animation Play

Analytical representation of a vector in space Student activity Play

Angle bisector Student activity Play

Angles around a point Student activity Play

Angles around a point Whiteboard exercise Play

Angles in a circle Whiteboard exercise Play

Angles in a circle Student activity Play

Angles on a straight line and angles round a point Student activity Play

Area under enlargement – a heptagon Whiteboard exercise Play

Areas of images of figures under enlargement Student activity Play

Arithmetic mean Animation Play

Arithmetic mean – 'balancing point' of the data Student activity Play

Arithmetic mean – 'balancing point' of the data Whiteboard exercise Play

Atomic bomb Whiteboard exercise Play

Atomic bomb Student activity Play

Attraction between point masses and homogeneous balls Student activity Play

Attraction between point masses and homogeneous balls Whiteboard exercise Play

Balancing point Animation Play

Balls on a billiards table Animation Play

Billiard ball collisions and the velocity vectors Student activity Play

Blot and symmetry Animation Play

Boiling and boiling point Whiteboard exercise Play

Boiling and boiling point Student activity Play

Boiling point Animation Play

Boiling point Student activity Play