Students are introduced to the water cycle. They help draw a picture of a lake ecosystem, adding human impacts that affect water quality. Students help fill in the components of a drawing of a water system. At the end of the lesson...

Students assemble a poster of an estuary showing the five communities of animals and plants that inhabit the estuary. They research the concept of an estuary and find photographs or diagrams of various estuaries to identify and see the...

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.