This book guides children to create the diagram of a story similar to the diagram of an algorithm. Children will learn the main coding control structures (sequences, decisions and loops) in a playful and engaging manner. The story is about Jolly who is an ambitious horse that has a wish. He has to take on challenges and follow his heart. Jolly will have to work hard and make decisions. Will Jolly's dream come true? The action is well structured, and, on each page, there is an explanation that describes the control structure which can be used to represent the respective situation. At the end of the book, there is the complete diagram. Children will learn to create a visual schema of the story by following the instructions and using the cards provided in the book. Teaches basic concepts of algorithms to children from 5 to 12 years old.