Who were some of the earliest scientific engineers and what problems did they solve? What scientific discoveries led up to major breakthroughs such as the assembly line, computers, or the Internet? Who first proposed ideas to solve problems? And how did the solutions change over time? Readers will trace the history of key discoveries in engineering and design as they investigate timelines and gather key details from the text. In doing so, students will make connections between the work of various scientists and analyze the long-term effects of their discoveries.