Gadgets and Gizmos
Keep your kids busy and learning while having fun, and encourage healthy curiosity. This ebook gives clear instructions and diagrams for making over 40 gadgets, gizmos and interesting mechanical devices. A high priority is given to being able to complete each project without special tools and materials. The cost of each project is low. All projects are make-it-yourself without having to buy kits. Only low cost and no cost materials are needed.