Materials: Tooth Egg-speriment skill sheet, 3 hardboiled eggs with white shells, dark-colored juice (i.e, grape juice), cola, water, 3 clear cups, toothbrushes
- This experiment demonstrates the importance of brushing your teeth.
- Remind children why we brush our teeth: When sugary foods or drinks stay on our teeth, it can cause holes called cavities. Some sugary drinks even stain teeth.
- Show the hardboiled white eggs. Explain that an eggshell is like enamel, the white coating on our teeth. Enamel protects our teeth like an eggshell protects an egg.
- Put one egg in a cup filled with water, one egg in a cup filled with juice, and one egg in a cup filled with cola. Ask children what will happen to the eggs if they soak in the cups overnight.
- The next day, hand out the skill sheet. Together, check the eggs. What has changed? Have students color their pages to show the results. Then let them use a toothbrush to clean the darkened eggs. critical thinking/observing and recording