To go along with our dentist theme, we did a little experiment the other day. We had two hard boiled eggs. We put one in a cup of water and one in a cup of dark soda and left them there over night. The next day the boys checked their eggs out. They saw that the one in soda was dark brown...this is what Vann thought would happen. It showed them how soda, for one thing, is not good for your teeth and if left unbrushed could stain/damage them. Then the fun part...they spent a little time brushing the egg clean!