Discover how lots of things work with videos and activities that answer questions including:
How does a 3D printer work?
Why does it rain?
How do ice rinks work?
This excellent addition to the ever popular Questions & Answers series lifts the flap on all kinds of gadgets, systems and ideas. It answers questions such as How does electricity get into our walls? Why do waves go up and down? and Where does money come from? Perfect for every inquisitive child.
