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The main characters of this book - fourth-grade animals from different schools - study, train and compete with each other and invite students to plunge into adventures with them. So, your child will be solving problems, doing various exercises, answering questions that require ingenuity and the ability to find original solutions. The tasks in this edition are of varying complexity, interesting in their presentation, and aimed at practising and consolidating the knowledge gained during study. Exercises in the form of a game usually appeal to children: students quickly come up with solutions, and the answers they find make them excited and happy. So, the child will practice the main topics in fourth grade mathematics and enjoy learning.