Anyone can learn computer science, even at the elementary school level. This book delves into the essential computer science concept of using feedback to improve using age-appropriate language and colorful illustrations. A meaningful storyline is paired with an accessible curricular topic to engage and excite readers. This book introduces readers to a relatable character and familiar situation, which demonstrates how they can use feedback to improve in everyday life. In this book, Sal builds a sailboat and uses feedback to improve it. This fiction book is paired with the nonfiction book Building a Sailboat (ISBN: 9781538367872). The instructional guide on the inside front and back covers provides: Vocabulary, Background knowledge, Text-dependent questions, Whole class activities, and Independent activities.