The students will understand more about reptiles. One day before the lesson, place the 5 eggs in 5 cups of vinegar. Make sure the egg is fully submerged. The vinegar will dissolve the shell. Explain to students about characteristics of reptiles and reptile eggs.
Reptiles emerge from their eggs fully shaped.
A reptile egg has a tough, leathery shell with a built in food supply. Tough shells allowed eggs to become fossilized. Some reptiles not only have thick shells on their babies, they are on themselves as well. During center time, take one egg out of vinegar with a spoon. Discuss how it feels.