Fossil Clay Recipe

4 cups baking soda
2 cups corn starch
2 1/2 cups water

• Place soda and corn starch in sauce pan and mix well. 
• Slowly add the water to avoid lumping.
• Cook about 6 minutes until has consistency of mashed potatoes.
• Spread on cookie sheet and cover with damp towel.
• Knead about 10 minutes.

• Store in air tight container.
  

Makes enough clay for about 20 fossils.

Use small rubber dinosaurs,  tiny seashells, plastic leaves or fern to make impressions in the clay.  Let impressions sit for 24 hours or bake impressions on lightly greased cookie sheet in 200° oven for two hours.

On the day we do this we fill sand table with rice and bury a wooden dinosaur puzzle in the rice.  Give students brushes and small garden tools and let them uncover the pieces and put dinosaur together.