In the Pollution Patrol lesson, students work in teams to design and build their own outdoor air pollution detectors out of everyday items. They design, refine and then test their air pollution detectors, and then see how many particulate pollutants they capture with their devices at various locations around their school. They record and evaluate their results, and present their design process and results to the class. A teacher’s guide with a suggested materials list is available in PDF format. Student Resource sheets provide information on air pollution, particulate matter, particulate matter counters, and rating air quality. Student worksheet pages include directions for the planning, construction, testing, and evaluating phases of the design process as well as questions about the overall process and student results. The lesson should take 2-3 forty-five minute sessions. The author states the lesson is appropriate for ages 8-18, although it most closely aligns with middle school expectations.