Learners are taught how to format and enter data into an Excel spreadsheet. They make a graph, and interpret graphed data. Students discuss the possible impacts of zebra mussels on the Hudson river. They graph zebra mussel data.

Second graders identify saltwater and freshwater habitats and the resources found in them. They compare and contrast the two habitats and discuss their findings. They discover the resources bodies of water can provide.

First graders recognize that nearly three quarters of the Earth is covered by ocean. They locate the Pacific, Atlantic, Indian, Arctic and Antarctic oceans on a map. They describe the difference between ocean water and fresh water.