2-D representations of 3-D objects on triangular dotty paper Student activity Play

A cardboard model of a prism Animation Play

A prism Student activity Play

A prism Slideshow Play

A prism Whiteboard exercise Play

Absorption spectra Student activity Play

Absorption spectrum of gases Animation Play

Absorption spectrum of gases Student activity Play

Absorption spectrum of gases Simulation Play

Acids (1) Student activity Play

Acids (1) Whiteboard exercise Play

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

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

Atomic spectra of elements Student activity Play

Atomic spectrum of hydrogen Student activity Play

Binoculars Student activity Play

Binoculars Student activity Play

Building the prism Simulation Play

Colour addition Student activity Play

Colour addition Simulation Play

Colour subtraction Student activity Play

Colours Simulation Play

Colours Whiteboard exercise Play

Colours Student activity Play

Colours of the spectrum Illustration Play