This week we did the old cola and egg experiment to demonstrate the effect cola has on our teeth. The idea behind this experiment is that if you take a nice white clean egg, representing a tooth and soak it in cola for a long period of time, representing drinking too much soda/not brushing our teeth, then it will discolor the "tooth". I didn't take a picture this week, so the below pictures are similar. Ours was actually quite a bit worse (nasty huh!) and ours was cracked as well, representing cavities. The kids generally talk about this experiment a lot and spend a good amount of their free time observing the egg.
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