Use this lesson plan to learn about inclined planes, pulleys, levers, and wedges, then take this new understanding to recess to identify how simple machines improve the students’ recreational time. After this hands-on research, challenge your class to imagine a better playground and design, draw, or model new equipment that leverages simple machines and reflects their personality and favorite pastimes. What inventions and innovations did your class bring to the table? Which piece of playground equipment received the most improvements? What did you learn about your students in this exercise? Share their sketches and thoughts with us!