Discover the strength of a dome

Discover the strength of a dome
Some of the strongest shapes in nature are curves and domes. Think of the ancient temples, churches and buildings that are still standing after hundreds of years. Explore why a dome is so strong with your kids and help them learn about these cool scientific facts.
Number of players:
1+
What you need:
Four empty eggshells
Scissors
Masking tape
Medium-sized books
Activity:
Tape some masking tape around the middle of one eggshell.
Cut the eggshell in half through the masking tape, leaving four eggshell halves.
Place the eggshells dome up in a rectangle sized just a bit smaller than one of your books.
Carefully place a book on the eggshells. The eggs will hold it without cracking.
Keep adding books until the eggshells crack. How many books can they support?