Edutopia. The annual event—which started in 1970—provides students with an opportunity to explore a range of subjects, whether science-based investigations, thematic reading, or creative arts projects. To help teachers brainstorm some ways to incorporate Earth Day into the curriculum, we’ve compiled a list of resources that offer lessons, ideas, tips, and activities that are perfect for Earth Day. There’s a bit of everything, including lesson plans, tools, resources, and student reading lists. By Matt Davis