Science Education Resource Center at Carleton College
Serc: Make a Model Fossil
This activity will show students two different ways fossils can be made. They will form and discuss the differences between a "mold" and a "cast" model fossil(s).
Science Education Resource Center at Carleton College
Serc: Investigating Fossils and Living Organisms
For this lab, students will observe and compare fossils with living organisms by making a "fossil" and comparing it to a real fossil and the "organism" it was made from.
Other
Arizona Sonora Desert Museum: Make a Fossil Mold and Cast [Pdf]
For this activity, students will make a fake fossil cast using plaster of Paris. A second activity on comprehending the size of dinosaurs is included in this file.