A cardboard model of a prism Animation Play

A cyclic quadrilateral Whiteboard exercise Play

A cyclic quadrilateral Student activity Play

A polygon inscribed in a circle Student activity Play

A prism Slideshow Play

A prism Whiteboard exercise Play

A prism Student activity Play

A quadrilateral inscribed in a circle Whiteboard exercise Play

A quadrilateral pasture Whiteboard exercise Play

A rhombus, a parallelogram and a trapezium in coordinates 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 in a cyclic quadrilateral Student activity Play

Angles in a cyclic quadrilateral Whiteboard exercise Play

Angles in a quadrilateral Simulation Play

Angles in simple polygons Class activity Play

Angles in simple polygons Whiteboard presentation Play

Angles in the quadrilateral Whiteboard exercise Play

Angles in triangles and quadrilaterals Whiteboard presentation Play

Angles in triangles and quadrilaterals Class activity Play

Angles of a quadrilateral Student activity Play

Angles of a quadrilateral Whiteboard exercise Play

Angles of a quadrilateral – proof Animation Play