This chapter presents two fiction trade books that can be used to inspire students to design and test various flying machines. It provides opportunities for students to engage in optimizing design solutions through testing and comparing flying machines. In the K–2 lesson, students compare the distance various flying toys can travel and learn that all flying machines have to work against the pull of gravity. In the 3–5 lesson, students consider specific criteria and constraints while designing a model hovercraft, which supports the science and engineering practice of planning and carrying out investigations. A materials list, teacher background information, and outcomes are provided. This book selection includes the Table of Contents, Introduction, References, Internet Resource, and Index.