This learning packet, one in a group of eight, was developed by the Duke Power State Park in North Carolina for Grades 4-6 to learn to identify macroinvertebrates found in Lake Norman. Loose-leaf pages are presented in nine sections that contain: (1) introductions to the North Carolina State Park System, the Duke Power State Park, the park's activity packet, and Lake Norman; (2) a summary of the activities that includes major concepts and objectives covered; (3) a pre-visit activity to demonstrate the dichotomous key in identifying tree leaves; (4) an on-site activity to enable students to recognize indicators of water quality and aquatic habitats; (5) a post-visit activity to encourage students to examine conflicting land-use concerns in an effort to preserve a lake; (6) a list of 47 related vocabulary words; (7) necessary park and parental permission forms for the visit; and (8) blank pages for taking notes. Contains 25 references. (MDH)