Approximating areas of flat irregular figures Student activity Play

Astigmatism Animation Play

Beyond the solar system Student activity Play

Beyond the solar system Whiteboard exercise Play

Calculating the area of flat irregular figures Whiteboard exercise Play

Classification of galaxies Illustration Play

Different forms of energy Simulation Play

Division of galaxies Whiteboard exercise Play

Division of galaxies Student activity Play

Energy Class activity Play

Evolution of the Universe Illustration Play

Examples of irregular polygons Whiteboard exercise Play

Examples of irregular polygons Student activity Play

Examples of planets: Mars and Neptune Illustration Play

Examples of regular polygons Student activity Play

Forms of energy in the house Student activity Play

Galaxies Class activity Play

Galaxies Whiteboard presentation Play

Galaxies Class activity Play

Galaxies Whiteboard presentation Play

Galaxies, clusters and nebulae Whiteboard exercise Play

Galaxies, clusters and nebulae Student activity Play

Galaxies, clusters and nebulae Illustration Play

How it all started Animation Play

Hubble's Law Whiteboard exercise Play