Middle schoolers investigate natural disasters by participating in an experiment. For this water formation lesson, students define the dangers associated with avalanches and landslides. Middle schoolers utilize a bag of sand, meter-stick...

Seventh graders observe and test for the presence of carbon dioxide gas. They compare concentrations of carbon dioxide gas and conclude high concentrations of carbon dioxide gas are unhealthy for human beings.

Pupils identify the different types of bridges. Using the internet, they research information on how they are built by completing a scavenger hunt. Locating a specific area, they determine which type of bridge would be appropriate and...