Three children show and discuss their wobbly teeth. They visit an aquarium and find out about sharks’ teeth and talk about the differences between shark and human teeth.

First broadcast:
22 March 2011

This could be used to introduce a session about the changes that occur as humans grow older. The clip would lead into opportunities for investigation into comparisons between milk teeth and adult teeth and the importance of looking after them. This could be followed by pupils using mirrors to identify their own teeth on a chart, noting any gaps or adult teeth. It would be useful for initiating discussion about a healthy diet and dental hygiene in humans where activities could include using cola drinks and vinegar to show the effects of acids on dirty coins. It could help to focus investigations into the differences between humans and other animals.