+
Handout
Idaho State University

Idaho Museum of Natural History: Beaver

For Students 6th - 8th
This competent site delves into the physical characteristics, range, habitat, diet, ecology, reproduction, and conservation status of the American beaver.
+
Website
Idaho State University

Idaho State University: Radiation Measurement

For Students 9th - 10th
A brief introduction to units of radiation measurement.
+
Website
Idaho State University

Idaho State University: Gamma Radiation

For Students 9th - 10th
A good illustration and a simple explanation of gamma-ray decay.