Lesson Plan

"Fishy Business"                        Don't Let It Loose: 5-8th Grade

Students study a freshwater habitat


Students will examine the effect of exotic species on an ecosystem by role-playing both a healthy food chain and one that has been impacted by Mayan cichlids. Students will also be able to discuss a basic food chain, define and give examples of exotic species, and discuss how exotic species can disrupt a food chain.


Our "Don't let it Loose" unit is broken into seven lesson plans, each taking 45 minutes to 4 classroom periods to complete, and targeted primarily at middle school students. A class needn't complete every lesson in the unit, though some lessons do refer to one another. However, each lesson comes with its own set of objectives and resources.


Additional Resources




exotic, native, food chain, predator, prey