Becky Crabtree’s Science Class had guest speakers in four classes and Envirothon practice today. National Park Rangers, Lori Hynes and Sierra Speer, both from the Educational Tech Program at the New River Park and Preserve, visited JMHS today. They led an hour-long activity, featuring a survey of macro invertebrates and their effect on water quality. Students observed and identified specimens in trays of water from Dunloup Creek in Fayette County. They used dichotomous keys to determine the identity of a variety of bugs, including hellgrammites, May flies, and Stone flies. Students learned that the presence of sensitive macro invertebrates indicate cleaner water.
