Drawing opposite vectors Whiteboard exercise Play

Enlargement – the basic property Student activity Play

Enlarging the right-angled triangle – the basic property Simulation Play

Enlarging the square – the basic property Simulation Play

Equally likely outcomes Student activity Play

Estimation of the volume Animation Play

Exterior angle of a triangle Whiteboard exercise Play

Exterior angle of a triangle – exercises Student activity Play

Exterior angle of a triangle – observation and proof Student activity Play

Figures made up from four strips Animation Play

Finding angles Whiteboard exercise Play

Finding angles in a triangle Student activity Play

Finding areas Student activity Play

Finding areas Whiteboard exercise Play

Finding images under symmetry Student activity Play

Finding side Whiteboard exercise Play

Finding sides Whiteboard exercise Play

Finding sides Student activity Play

Finding sides Student activity Play

Finding sides in the hexagon Whiteboard exercise Play

Finding sides in the triangle Whiteboard exercise Play

Finding square roots (1) Student activity Play

Finding square roots (2) Student activity Play

Finding the area of a trapezium Whiteboard exercise Play

Finding the area of a triangle Whiteboard exercise Play