Anyone can learn computer science, even at the elementary school level. This book delves into the essential computer science concept of digital citizenship 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 digital citizenship is used in everyday life. Yumi learns what digital citizenship means and how she can apply it to her Internet activities. This fiction book is paired with the nonfiction book Computer Dos and Don'ts (ISBN: 9781508137917). The instructional guide on the inside front and back covers provides: Vocabulary, Background knowledge, Text-dependent questions, Whole class activities, and Independent activities.