This lesson introduces students to the concept of marine debris, especially as it relates to plastic bags. Students are asked to do a research project measuring the amount of plastic bags they use at home and school and create a communications piece that educates others on plastics contribution to marine debris. In the Extension part of the lesson, students can take steps to reduce the use of plastic bags and educate their community on reducing waste. The lesson should take approximately 1 week to complete. A Student Worksheet is available for gathering and analyzing data on plastic bag usage. Links to resources are available for the students and the teacher to use. The authors state the lesson is appropriate for grades 4-8, but the lesson better aligns with a middle school performance expectation.