Anyone can learn computer science, even at the elementary school level. This book teaches readers how to evaluate credibility and accuracy of information they find online 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 to evaluate credibility and accuracy in everyday life. In this book, a narrator find a fact about day and night on Earth and evaluates its credibility and accuracy. This fiction book is paired with the nonfiction book What Causes Day and Night? (ISBN: 9781538367797). The instructional guide on the inside front and back covers provides: Vocabulary, Background knowledge, Text-dependent questions, Whole class activities, and Independent activities.