Freddy's first-grade class is learning all about Earth Day, and all about the little things that even kids can do to help the planet. If Freddy can complete all 10 points on the Earth Day Challenge list, he gets to join Team Green! Illustrations. Original. Freddy's first-grade class is learning all about Earth Day, and all about the little things that even kids can do to help the planet. If Freddy can complete all 10 points on the Earth Day Challenge list, he gets to join Team Green! Illustrations. Original.