What Are the Hazards of Shipping on the Great Lakes?

This What Are the Hazards of Shipping on the Great Lakes? lesson plan also includes:

An online animation demonstrates how the lock system between Lake Superior and Lake Michigan works. Pupils then construct their own models of the lock system out of shoe boxes that they bring from home. This is an educational activity that can be used in conjunction with a history lesson or a technology engineering lesson.

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Classroom Considerations
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