From Dick Blick art lessons, I tried this one out today. fantastic-faux-fossils-faux-fossils or find it on the website
www.DickBlick.com. Here is my example:
I used found objects: leaves, string, and sea shell. Materials I thought a group of third graders would be able to work with. Tissue paper and typing paper cover with white glue sealed the found objects just fine. Broke the pastels up, rubbed on, and sealed. This is a perfect connect between art and science.