Publication Year:
2025
Summary:
In this 9-12 lesson plan, students will be actively involved in sampling aquatic macroinvertebrates from a local stream or river, and then identifying the organisms using pictorial keys. Based on the relative pollution sensitivities of each macroinvertebrate group, overall stream health will be determined using a spreadsheet template or a simpler qualitative data sheet. Mercury levels in sampled dragonflies is an additional activity that can connect student data to a growing national data set.