The National Geographic How Things Work range is an exciting new series designed with creative play in mind. These beautifully styled 3D puzzles use card and other materials to create a perfect ‘build and play’ range of STEAM science toys. The 8 line range includes a Periscope, Monocular, Hydraulic Lift, Blast Off Rocket and Parachute Launcher, that all come with an instruction booklet that outlines fun facts about the unique build, to help children understand How Things Work.