The fifth grade has been learning to identify species by examining their physical characteristics. On Tuesday, September 25, they took an unusual exam. Instead of paper and pencil tests, the students trekked down to the pond in Evergreen Cemetery. They had to identify at least six species of trees and use data from water/mud samples to rate the water quality in that ecosystem.
Searching through mud and water samples, macro invertebrates were grouped by species, the species were grouped by sensitivity to pollutants. Upon returning to the classroom students used their data to conclude that the water quality was fair. Many thanks to Deborah DuDevoir, the mother of fifth grader, Caty, who provided the equipment, lab sheets and expertise for this activity.
We also brought back with us, for a temporary visit, Sir Isaac Fig Newton, a newt who is vacationing on a lovely rock surrounded by water, plants and insects from his home. Each class also has been keeping a fish bowl with aquatic insects, larvae and fish.
Our next venture is to the Gulf of Maine Resource Institute on October 30 to complete our unit on life sciences by exploring the ecosystem and economy of Maine's Gulf.
- Jan Libby, 5th Grade Teacher