books by subject
Children's Books on How Things Work
A Darkling Plain
Springs
Pulleys
Screws, Nuts, and Bolts
How Was That Built?: The Stories Behind Awesome Structures
Lonely Planet Kids Ancient Wonders - Then & Now
My T-shirt and other clothes
Mr Shaha's Marvellous Machines: adventures in making round the kitchen table
Kay's Incredible Inventions: A fascinating and fantastically funny guide to inventions that changed the world (and some that definitely didn't)
Book of Paper Airplanes (Klutz)
Pressing Down: The Lever
Rolling Along: Wheels and Axles
Sloping Up and Down: The Ramp
Pulling Up: The Pulley
Stone Age Geometry Spheres
Splitting Apart: The Wedge
Winding Around: The Screw
Stone Age Geometry Squares
Stone Age Geometry Triangles
Stone Age Geometry Cubes
Stone Age Geometry Circles
