A cardboard model of a prism Animation Play

A prism Slideshow Play

A prism Whiteboard exercise Play

A prism Student activity Play

A rhombus, a parallelogram and a trapezium in coordinates Whiteboard exercise Play

A trapezium and a kite Animation Play

A trapezium and a kite – conclusions Whiteboard exercise Play

Absorption spectra Student activity Play

Absorption spectrum of gases Simulation Play

Absorption spectrum of gases Animation Play

Absorption spectrum of gases Student activity Play

Angles and sides of quadrilaterals Student activity Play

Angles in a trapezium Whiteboard exercise Play

Angles in simple polygons Whiteboard presentation Play

Angles in simple polygons Class activity Play

Angles of quadrilaterals Student activity Play

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

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

Application of the Pythagorean theorem in 3-D Whiteboard presentation Play

Application of the Pythagorean theorem in 3-D Class activity Play

Applying the trapezium rule Animation Play

Applying the trapezium rule for a different number of sub-intervals Whiteboard exercise Play

Approximating area by rectangles and trapeziums Student activity Play

Approximating area by rectangles and trapeziums Whiteboard exercise Play

Approximating area by trapeziums Student activity Play