April 22 is Earth Day. Use the lessons, printables, and references below to teach your class about our environment and how to preserve our planet. Resources on global warming, recycling, and pollution will help you explore this important topic. There are plenty of fun hands-on activities for science and art to keep students interested in learning about their world. You'll find a variety of cross-curricular Earth Day resources to enhance your curriculum for kindergarten through twelfth grade.