These four punch-out models are easy to make and children will learn as they play! Discover the exciting world of construction vehicles by assembling models of a bulldozer, tractor, dump truck, and ex
Kids can discover interplanetary marvels with these four imaginative spaceships, rendered in a colorful Pop Art style. Simple diagrams illustrate the vehicles' easy assembly, and the fold-out pages ar
Leonardo da Vinci, one of the most extraordinary thinkers in history, sketched and wrote about many innovative machines that were hundreds of years ahead of their time but were never built during his
