Anyone can learn computer science, even at the elementary school level. This book delves into the essential computer science concept of debugging 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 debugging is used in everyday life. Tarik investigates why his telescope isn't working, and fixes the problem once he finds it. This fiction book is paired with the nonfiction book What's Wrong with the Microscope? (ISBN: 9781538353172). The instructional guide on the inside front and back covers provides: Vocabulary, Background knowledge, Text-dependent questions, Whole class activities, and Independent activities.