Jump back in to the S.T.R.E.A.M.!
We learned that an Imprint Fossil is a print of what the fossil looked like when it rested on the surface. As the soft material (like skin and fur, or leaves) decay, there is a print left of where the material was in the Earth. Then, we learned that a Cast Fossil is when mud or material fills in the space left by the decayed material, and forms a mold of the object!
We got to test this process out by creating our own Imprint and Cast Fossils using clay and glue! Take a look:
1st step: Make the print (to be the Imprint Fossil):
and 
Then, we filled them with glue to create the Cast Fossil!
Next up, we will explore the world of Paleontology by uncovering "bones" and trying to find out what animal the fossils belong to!
Keep Exploring,
Ms. Gillis
Check this blog out to learn about what is happening with 3rd Grade in the S.T.R.E.A.M. Lab throughout the year.