Solve the puzzles and save the world Everyone can help preserve our planet, and these 24 "green" activities show how Appropriate for ages 6 to 8, they focus on recycling, fighting pollution, and other ecology-related activities. Fun-filled puzzles include word searches, secret codes, spot-the-differences, mazes, and more. Solutions included. Free Teacher's Manual available. Grades: 1-2. Boost: Seriously Fun Learning Keeping children entertained and engaged is the key to learning, and the Boost series offers a wide range of fun-filled coloring and activity books that help teach a variety of basic skills. Each title is targeted to a specific grade range and carefully aligned with the Common Core State Standards, which are listed at the bottom of each page.