The second of a three-unit lesson plan, this focuses on how human-made structures affect watersheds. Using watershed models that were built during the first unit, junior geologists now place buildings, dams, or levees into the models and...

By constructing a watershed model and identifying watershed features in it, they discover how water erosion changes the landscape. As with most watershed modeling activities, this one is costly in terms of time and materials. It is,...

If you knew people would pay extra for a bald dragon, could you pick which parents you should breed in order to get the highest number? The unit examines heredity and genetics through breeding dragons, mice, dogs, and tries to figure...