Students create and conduct experiments on a "classroom river habitat." They manipulate the biotic and abiotic factors so that they are able to compare an artificially prepared river model to a naturally occurring lotic ecosystem.

Hold the sea in the palm of your hand! Amateur oceanographers work together to create models of an ocean ecosystem in the sixth and final installment in a series. Raise awareness of global ocean health issues through guided research,...

Students examine how sand is formed by erosion and that it can be moved by streams, rivers, and ocean currents in this unit of lessons. They study waves and currents, and structures that change how sand moves by creating story charts,...