A car moving at constant speed Animation Play

A diagonal of a cuboid Animation Play

A line parallel to a given line Student activity Play

A trapezium and a kite – conclusions Whiteboard exercise Play

A triangle in a coordinate system Whiteboard exercise Play

An area problem Whiteboard exercise Play

An area problem Student activity Play

An area problem – visualisation Animation Play

An interesting result Student activity Play

Angles of a quadrilateral Student activity Play

Angles of a quadrilateral – proof Animation Play

Application of the Pythagorean theorem in 2-D Whiteboard presentation Play

Application of the Pythagorean theorem in 2-D Class activity Play

Approximating area by rectangles Student activity Play

Approximating area by rectangles Whiteboard exercise Play

Approximating area by rectangles and trapeziums Whiteboard exercise Play

Approximating area by rectangles and trapeziums Student activity Play

Approximating the area Student activity Play

Approximating the area Whiteboard exercise Play

Approximation of the area under a curve Whiteboard presentation Play

Archimedes' contemplation Animation Play

Area and circumference – calculation problems Whiteboard exercise Play

Area and circumference – calculation problems Student activity Play

Area of a rectangle Student activity Play

Area of a rectangle Animation Play