We have been learning about our teeth, how to look after them and tooth decay. We investigated what might happen if we left those drinks on our teeth overnight, without brushing them. We placed different liquids onto a hard-boiled egg (because its hard but thin outer shell is like the plaque on our teeth) and left them, to see what would happen.
Look what fizzy drink does to your teeth! Coffee stained the egg too.
We
then used a toothbrush and some toothpaste to see if we could brush the stains
off the eggshell. It looked a lot cleaner afterwards.
We got a very important call today, to go out on an archaeological dig where some Viking or Anglo-Saxon artifacts had been found. Before we were allowed on site, we had to pass our final exam. This involved showing that we were able to extract 'artifacts' carefully by excavating the rocks were were given... We know how careful and patient archaeologists need to be!