Mad Machines And Dotty Devices

R40.00

From using a balloon to create a rocket, to powering bottles through the water with paddles, these tried and tested ideas will soon have you on your way to techno-wizardry. You’ll also learn to spy on neighbors with a secret Spyscope, or look at your friends upside down with a pin-hole

1 in stock

SKU: 9781902915913 Category:

Description

Mad Machines And Dotty Devices: Mind-Boggling Inventions!