TeachEngineering
Teach Engineering: Fossil Fondue
To understand how fossils are formed, students model the process of fossilization by making fossils using small toy figures and melted chocolate. They extend their knowledge to the many ways that engineers aid in the study of fossils,...
University of Texas at Austin
University of Texas: Modeling Petrified Wood [Pdf]
An experiment that models the natural process of petrification.
Utah Education Network
Uen: Fossils Moldy Oldies
A good introduction to different types of fossils and how they form. There are also directions for making three different models of fossils.