A cardboard model of a prism Animation Play

A model electric motor Slideshow Play

A model of a morphine molecule Illustration Play

A model of the distorted space around the Sun Illustration Play

A rainfall model Student activity Play

A rainfall model Simulation Play

Addition of phosphorus Illustration Play

An atom and a nucleus Student activity Play

An atom and a nucleus Animation Play

Applications of linear models Student activity Play

Applications of linear models Whiteboard exercise Play

Atomic number Student activity Play

Atomic spectra Class activity Play

Atomic spectra Whiteboard presentation Play

Atomic spectrum of hydrogen Student activity Play

Bohr model Student activity Play

Bohr model Whiteboard exercise Play

Bohr's atomic model Whiteboard exercise Play

Bohr's atomic model Animation Play

Bohr's atomic model Student activity Play

Bohr's model of the atom Animation Play

Caenorhabditis elegans – a model organism Animation Play

Capacity of a car's fuel tank Animation Play

Carboxyl group Illustration Play

Cardboard model of a cone Animation Play