Shark's toothpaste

Some tortures are physical

And some are mental,

But the one that is both

Is dental.

~ Ogden Nash

Last week at school, the children took part in the Amazing Science of the Mouth show, which is an oral health education presentation created by Macleans and Mad Science.  They each received a showbag full of fun things to encourage them to experiment at home, including the shark's toothpaste experiment and a pH Reaction Kit game.  Perfect for the start of the school holidays. 

The toothpaste experiment (variously referred to as the volcanic lava trick depending on which science module you are trying to teach) involves the fizz-inducing combination of vinegar and bicarbonate of soda, detergent and food colouring.  I'm glad we did it in the sink.  Mac the Shark's pearlies are now sparkling.