Topics: The Infinite Monkey Cage - BBC
1. The Dating Rocks and Fossils Using Geological Methods article in Nature's excellent Scitable series of online articles in the Nature Education Knowledge Project.
2. University of California, Berkeley Museum of Paleontology's Understanding Deep Time online resource. This is an informational tour in which students gain a basic understanding of geologic time, the evidence for events in Earth’s history, relative and absolute dating techniques, and the significance of the Geologic Time Scale.