Free Printable Earth Day Coloring Activities

April 22 celebrates Earth Day, formerly called Arbor Day. Need free printable Earth Day lessons and activities for your science classroom, homeschool, 4H club or scout troop? Here are links for free printable environmental science activities. EPA.gov has free printable lesson plans for Earth Day. This link takes you to a free printable cartoon style graphic novel entitled 'On the Trail of the Missing Ozone'. Students learn about atmosphere, the ozone layer and what we can do to protect it. Students can color the cartoons in this free printable 8 page booklet. Makes a great preschool and homeschool resource.  Free Earth Day Printables