Fossil Layers and Sedimentary Rock Demonstration (Bread + Gummy Candy!)
Experiment: https://teachbesideme.com/sedimentary-rocks-fossil-experimentL

Focus: What are sedimentary rocks, and how do fossils form inside them?

Materials:
- Bread (could do just one type, but a few different kinds shows sedimentary layers better)
- Gummy candies (worms, bears) 
- Heavy Books

Follow the steps in the links above, but the general idea is that you layer bread with hidden gummies and then SQUISH it down with books.

This demonstrates how sedimentary rock is formed (and how it sometimes has fossils hidden inside!)