Keep track of your kids' growth, both physically and educationally, with the Keep Our Planet Healthy Grow Chart. Your child will love seeing how tall they are, all while learning about the Earth, and how to preserve it. This chart teaches children about littering, recycling, and more. No matter how little you are, protecting the planet is a big job. Recommended for children ages 3 and up. Imprinted with your message. This product is a great salesperson leave behind, and ideal for anyone who cares about the environment.