Four new titles have been added to the Be An Engineer series, which explains how different structures are designed by engineers to solve problems. Each title introduces and familiarizes children with the engineering design process, using reader-centered examples, fact boxes, and engaging photographs. An activity with step-by-step instructions completes each title, allowing readers to step into the shoes of an engineer and design their own model solution. A link printed inside each book gives readers access to Crabtree Plus, a website featuring supplemental digital content, including engaging simulations and interactive activities that reinforce and extend key series' concepts. Includes Teacher's Guide.