The lessons in this book offer an accessible STEM curriculum. Classes based on it are currently taught in a growing number of high school classrooms. Students and teachers alike are supported on the companion website, www.LearnCSE.com.Aided by more than 250 color photos, illustrations, and diagrams, the lessons and exercises in the book teach how to program and use the Arduino singleboard computer. In the process, the reader learns: How to program in C, the language underlying the most commonly used programming languages; How to identify and use common electronic components and sensors; How to perform electronics-specific tasks, such as creating a circuit board; How to construct, program, communicate with, and control robotic devices, including servos, LEDs, DC motors, infrared communicators, push buttons, potentiometers, NeoPixels, and H-bridges. Sample code provides starting points in each of the lessons.