"Budding engineers love to know how things work, how to take them apart and put them back together, and why certain designs work better than others. In this book, presented by Scientific American, students investigate many aspects of STEM, highlighting engineering concepts. Step-by-step instructions guide readers through each project, followed by science fair ideas and other extensions to most projects. A thorough explanation of the scientific method bridges science at home with science in the lab or classroom"-- Provided by publisher.