California State University
California State University Virtual Courseware Project: Radiocarbon Dating
Use interactive graphs and other diagrams to answer questions about carbon dating.
Other
Milton J. Rubenstein Museum: Determining the Age of Rocks and Fossils [Pdf]
This set of activities from the Milton J. Rubenstein Museum of Science & Technology has students investigating how relative dating and absolute dating methods are used to determine the age of rocks and fossils.
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Dating Popcorn
In this activity, students use popcorn to simulate the process scientists use to date layers in an ice core.
Other
How to Date a Fossil
Radiometric dating, fission-track dating, and amino-acid dating are explained in this succinct site.