1 HI Field Science School Programs Teacher Resources, BUGS! Clues to the Environment
2 Project Learning Tree.
Environmental Activity Guide.
American Forest Foundation: (Washington, D.C. ,1993), 142.
3 Project Wet.
Curriculum & Activity Guide.
The Watercourse and the Council for Environmental Education: (Bozeman, MT, 1995), i.
4 Ibid, 25.
5 Project Learning Tree, 142