Wednesday, February 29, 2012

Water, soda and some eggs!

I always love the look on their little faces when I bring something into the classroom that they know doesn't belong (like shaving cream!!).  I typically get a  "whaaat in the world?!"

This week... A soda, a bottle of water, and some hard boiled eggs! 

We placed one egg in water and 3 others in soda.  I explained that we are using eggs to represent our teeth.  Both teeth and eggshells are made of minerals containing mostly calcium.  We are letting them soak  in our classroom overnight. 

 Hmmm, I wonder what will happen to them???









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