See Inside How Things Work Hide and Seek periscope watch out: The walls in

watch out: The walls in the labyrinth can move at any time

drilling monster

Learn about the laws of physics and their applications in real-world engineering

The fun starts once you download the free app and gain full access using the code included in the box

See Inside How Things Work Hide and Seek periscope watch out: The walls inAn amazing flap book packed with inventions, machines, gadgets and devices, and facts and information about how they work. Over 90 flaps reveal the insides of car engines, lavatories, escalators, submarines and microwaves and many, many other machines. Includes internet links to websites with animations, games and experiments.