"This title introduces the concepts of functions and variables in coding by using relatable real-world examples in the reader's everyday life"--Publisher's website.
Secret agent Matt Mattics must rely upon his knowledge of equations with a single variable in order to stop Dr. Strangeglove from turning the world's numbers into tasty beverages with his Number Juicer.
Photographs and text describe how to understand and use variables while learning about some famous early flights including the Wright Brothers, Charles Lindbergh, and Amelia Earhart.