Kids learn about what keeps planes in the air, how wings work and the physics behind flight as they build 5 durable yet lightweight airplane models that can actually fly up to 30 feet! The kit guides kids through the building process, helping them test types of wings and wing positions to create the best models. Kit includes 44 building pieces and a full-color 16-page manual with helpful steps and explanations of what needs to be done for each design. Largest piece measures 10 1/4" in length.