In this lesson, students learn that scientists and engineers are problem solvers. They read about Margaret Hamilton in the book Margaret and the Moon: How Margaret Hamilton Saved the First Lunar Landing, by Dean Robbins. After reading, students will use observations of the Sun, Moon, and stars to describe patterns that can be predicated. This book selection highlights the practice of using mathematics and computational thinking, and it includes the Table of Contents, Foreword, Acknowledgments, About the Authors, and Index..