All the colours of the rainbow... You can make them appear and disappear!

http://www.planet-science.com/categories/under-11s/our-world/2010/12/all-the-colours-of-the-rainbow.aspx

We asked you to ask Planet Science a question and we've had some great ones ... The light from the sun looks white, but it's made up of all the colours of the rainbow.

http://www.planet-science.com/categories/under-11s/our-world/2011/07/why-is-the-sky-blue.aspx

Child Science Experiments: Rainbow Pinwheel. This is one of the simplest and fun of all young child science experiments. Cutting, pasting, gluing and bright colours ...

http://www.green-planet-solar-energy.com/child-science-experiments.html