Have the children carefully place an eggshell in a baby food jar. Add vinegar to cover half of the eggshell. Put on the lid and put in a safe place. After three-four days, have children explain their recordings and make conclusions about taking care of their teeth. Conclusion Ask the children what they have concluded about taking care of their teeth versus not taking care of their teeth.
Procedure Show the children the apple.
Tell them to pretend that it is a tooth. Poke a hole into the apple. Explain to the children that holes, or cavities, can form in our teeth when we don't brush, floss, eat healthy foods, and visit the dentist regularly. The hole you just put in the apple is the cavity. Have the children record what happens during the week by writing down or drawing observations.