4. The Toothbrush Experiment
This activity that’s next on our list of science activities for toddlers and preschoolers is very useful actually because it teaches children that brushing your teeth is very important. You need a hard boiled egg for this activity, as well as a toothbrush, toothpaste, and a can of dark brown soda. Place a hard-boiled egg with a white shell into a cup and then fill the cup with soda. Let the egg soak overnight. You can remove the egg the next day asking your child to describe what happened. Compare how the egg looked before and after. Help your child describe the situation. Now take a toothbrush and toothpaste and give them to your child. Explain to the child how to clean the egg so it’s white again. Finally, compare the egg to a tooth and discuss what might happen to our teeth if we don’t brush them regularly.
