This product guides students through the creation of a poster of an ecosystem that illustrates all of the key concepts learned in a unit on ecology. Students begin by drawing abiotic and biotic factors (plants and animals) of an assigned/chosen ecosystem and then add various symbols and labels as they go to illustrate concepts such as food webs, trophic levels, transfer of energy, limiting factors, keystone species, and more. This project assesses student understanding of how ecosystems functio