There are many possible answers to the question, "What is the nature of science and scientific inquiry?" This chapter provides students with experiences through which they can understand what science is all about and the sort of demands a scientific investigation makes. The chapter presents three lessons—one invites students to contrast everyday common sense with science sense; one emphasizes the empirical—the place of contrived experiments and systematic observation and how scientists use them to unravel problems; and the third lesson introduces engineering as a science concerned with solving practical problems.