"Eggs"perimenting with Teeth

Yesterday we made predictions about what we thought would stain teeth by soaking eggs in three liquids: water, grape juice, and soda. The students journaled about their predictions and today in the science lab we tested our predictions. We found that the soda and grape juice stain the eggshell but the water did not. The students concluded that the water was the best thing for their teeth. In the lab today the students also explored several different tooth-related stations. At one station they were able to see what would clean a grape-juice stained tile the best: store-bought toothpaste or homemade baking soda toothpaste. The students got to make their own toothpaste as a class. At another station they practiced flossing properly with an egg carton and yarn. To practice the correct brushing motion, the students colored cavities on laminated teeth and then used an eraser to "brush" away the cavity. At another station, they explored the pressure teeth has on food by using pliers and scissors on pretzels. At another station, they drew themselves with healthy smiles and wrote sentences explaining how to keep them healthy. They also had a chance to read all about teeth. Enjoy a slideshow of their explorations and experiments.

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