Plaster of Paris Dinosaur Eggs
These are great in dioramas or as arts and crafts projects. By using different sized balloons, you can simulate different types of dinosaur eggs.
Supplies:
1 cup Plaster of Paris
˝ cup water
4 small balloons
string
Large bucket, half filled with water
Directions
1. Mix the water and plaster together in a mixing bowl. It should have a smooth and creamy texture.
2. Place a funnel in the opening of one of the balloons.
3. Spoon the plaster mixture into the balloon, but do not over expand the balloon.
4. Remove the funnel and tie the end of the balloon closed (tightly) with a piece of string.
5. Float the balloon in the water bucket so you don’t have a flat-sided egg.
6. Repeat the process with the remaining balloons.
7. Leave the balloons in the bucket several hours, then remove and dry them off.
8. Carefully cut away the balloons.
9. Sand off the points where the balloons were tied.
10. Let you plaster “eggs” season for a day or two before you paint them.
Just as not all bird, lizard, and other animal eggs look alike, it is probable that not all dinosaur eggs looked alike. They would have been different sizes, shapes, and colors. The child(ren) should be allowed to explore their imagination and make each egg unique.
NOTE: Dispose of all Plaster of Paris debris outside. Do not wash Plaster of Paris down household plumbing as it will harden, even under water, and clog your pipes!
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