This is a detailed lesson plan for sustainable and unsustainable ecosystems. Overall and specific expectations from the Ontario curriculum are listed as well as the rationale and purpose for the lesson and required prior knowledge. A summary chart is included outlining the time required for each activity, instructional strategies to use, what the teacher will do, what the students will do, assessment strategies and tools, and ready-to-use support materials or supplies and equipment for the lesson. Lecture notes as well as key questions of investigation are included. A video link on invasive species and accompanying questions are included. An article required for the jigsaw task is also included and ready to print.