We're going to veer away from our normal excavation activities today and show you how to make a super cool Real Egg Excavation Challenge. During this tutorial, we are going to teach you how put a real egg in an excavation without cracking it. You can then set this up as a challenge for your excavating adventurer or as a prank. During the challenge, an attempt is made to safely excavate and remove the egg without it breaking. But during the prank, the excavating adventurer unknowingly dives in and eventually cracks the egg. 

Fun Fact: It usually takes between 23 and 26 hours for a hen to develop and lay an egg. Once the egg has been laid, a new egg begins developing in around thirty minutes. 
  • Sand
  • Plaster of Paris
  • Water
  • Mixing bowl
  • Wooden spoon
  • Measuring cups
  • Excavation tools. Wooden dowels and other blunt instruments work well. Sharp tools are unsafe and not necessary as the excavations are reasonably brittle and excavate easily. 
  • Safety goggles
  • Small brush
  • A few eggs
  • Container - Any plastic container will work as long as the egg will fit inside. If you are attempting a prank, you may want to use a container that will throw off any suspicions of what will be in your egg excavation. For instance, you may want a container with images of dinosaurs on the side. 


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  1. Put one cup of sand in your mixing bowl.
  2. Add one-third cup Plaster of Paris.
  3. Use the wooden spoon to mix the sand and Plaster of Paris.
  4. Add one-third cup of water and mix.
  5. Keep adding small amounts of water until you reach a pancake like batter consistency. 
  6. Pour a layer of mixture into the container about an inch deep. 
  7. Allow the mixture to set for a a few moments and then gently push the egg down into excavation.
  8. Allow this to dry for about fifteen minutes. This will hold the egg in place.
  9. Make another batch of mixture and cover the egg completely. 
  10. Set the Real Egg Excavation Challenge in a safe location to dry undisturbed overnight. I like to put the excavation in front of a fan.


Now the Real Egg Excavation Challenge is ready to be enjoyed. Find an area that is easy to clean up, distribute the safety goggles, excavation tools, and let the excavating begin. 

I hope you enjoyed this super quick tutorial and enjoy making the Real Egg Excavation Challenge. These excavations are very easy to make, inexpensive, and a lot of fun!
Pro tip: Use this activity to create some excitement around discussions or lessons regarding eggs, animals that lay eggs, and biology. 
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Happy Excavating!