The Great Lakes have been permanently altered by invasive species, and have adjusted to changes in the ecosystem throughout history.  In these lessons, students explore Great Lakes food webs, sometimes called “food chains,” and how invasive species alter the balance among native organisms.  Students learn about how humans and other species have altered the Great Lakes.

The free lesson plans below can be taught as part of a unit about “Ecosystems.” Each lesson includes assessment rubrics and student journal pages. 

Elementary & Middle School Classroom Activities

High School Classroom Activities

Next Generation Science Standards alignment: 

  • 3rd grade: 3-LS4-4
  • 5th grade: 5-LS2-1
  • Middle school: MS-LS2-2, MS-LS2-4 & MS-LS2-5
  • High school: HS-LS2-2