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Interactive
McGraw Hill

Mc Grawl Hill: Dino Dig

For Students 9th - 10th
A virtual lab allows you to do radiometric dating on dinosaur bones. You'll be using a mass spectrometer and utilizing several steps of the scientific method.
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Website
US Geological Survey

The Numeric Time Scale

For Students 9th - 10th
This is a good source for getting an in-depth description of using radioactive decay to measure the ages of rocks. In addition to describing the process of radiometric dating, this resource also includes a geologic time scale and four...