Students use a series of images to develop understanding of the key attributes of an ecosystem. They use this understanding to determine whether an area portrayed in an image is an ecosystem. Students learn the differences between ecosystems and habitats and use this understanding to examine a provocative image. This lesson is part of the Statistics Canada: Human Activity and the Environment Teacher’s Kit that explores the question, “What is the value of an ecosystem?” It may be used independently or in combination with other teaching and learning activities in the kit. The zipped folder contains a PDF lesson and a PPT presentation