Episode 71: Why Do Teeth Decay?
Challenge: Get and apple and a pencil. Give the apple 2 or 3 stabs with the pencil. Let the apple sit on the counter for a couple of days. Watch and see what happens. (Hint: the apple decaying is like your teeth decaying.) Explore this by making holes of different sizes and maybe even having… Continue Reading Episode 71: Why Do Teeth Decay?Read More