If you are using dirt from your garden, sort out roots and other unwanted particles to make it a purer mixture.
Combine dirt, sand, flour and salt in a big mixing bowl.
Add water to the consistency of a stiff, thick dough.
Take a hunk of dirt-dough in your hand, knead it.
Put a depression in the middle.
Insert plastic dinosaur toy.
Press and roll the ball with your hands like a meatball.
Put it on a tray to sit and dry for 3-4 days.
Dinosaur Egg Lesson
Teach your children about paleontologists and how they dig for dinosaur bones.
Pretend that you have found a fossilized dinosaur egg or a fossilized dinosaur. Help the little ones use a lightweight hammer to gently crack it open and make the discovery!