Three class periods are required to carry out this science lesson on glacial movement, the Great Lakes basin, and the lock system that allows travel on the lakes. It is an ambitious undertaking as your class experiments with a glacier...

Taconite is a rock that is used as a source of iron. Earth science explorers examine a piece up-close and discuss whether they think it is more cost effective to ship it by boat or by truck. They write letters to their state...

After reading about the Lake Erie water snake and the change in its population after the introduction of the round goby in 1990, young ecologists graph water snake diet data. They analyze the data and answer 10 questions based on their...