4 Major Projects to Build. A spinning motor. A clicking telegraph. A light flashing generator. A real Requires one D-cell battery Step-by-step, highly visual instructions lead a child successfully through each invention. Full color illustrations present central scientific concepts which allow children to discover the "why" as well as the "how". The use of everyday materials demystifies the workings of common electronic components. The animations that compliment the book on the website deepen and extend comprehension. Although designed for 8 year olds, Inventions has an extraordinary history and following. It has been used at MIT to mentor high school students in physics. It has been used at U.C. Berkeley to mentor women in science. It has been used similarly at other institutions including the Fermi Lab and the University of Texas at Austin. It was rumored that a number of physicists at U.C. Berkeley were spinning the handmade motors on their desks competing to see which motor would spin the fastest! Inventions received a rave review from the Women's Society of the IEEE after using it for camp programs for elementary school students. The IEEE's review boasted, "The projects actually WORK.even for large groups where individualized attention is not possible."