Earth is our home. We share our planet with billions of other people, plants, and animals, and it’s our job to take care of it.

What better place to go green than the classroom? Here are a few tips for teachers who want their classrooms and students to be eco-friendly.

Photograph by Andrew Henderson, National Geographic

Photograph by Sam Abell, National Geographic

Photograph by James L. Stanfield, National Geographic

Photograph courtesy National Geographic

Photograph courtesy NASA

Whether it’s on our list or not, share what you’re doing to make your classroom green! Find us on Facebook or Twitter, using the #TeachNatGeo hashtag; we’ll be re-sharing the coolest ideas we see from you!