Optical Illusions is a mind-bending introduction to the science of optical illusions, packed with clearly presented, hands-on projects and experiments for the reader to make and do. Combining in
Construct an arsenal of mini-models of large launchers, based on siege weapons used throughout history. All you need are everyday items and some adult help. Wheel them out as you conduct a siege and l
Make a set of traps and triggers powered by rubber bands and inspired by real-life devices. All you need are everyday items and some adult help. Choose your target and area of operation, hide your tra
