1.-Synonym is a book designed for children, parents and teachers, with examples and exercises to learn about synonyms. It also contains a dictionary and glossary of words in the Nahuatl language. It includes an introduction where it is explained and exemplified what these unique words are and how they are used. This book provides valuable material for the development of language skills and abilities. It helps to expand and develop a wide knowledge and appropriation of the Spanish lexicon 2.- .Acertijero is a compilation of enigmas, riddles and challenges for the intellect, which help the development of verbal skills. This book helps all its readers to develop their capacities for analysis, language relationships, solution and understanding of logical and mathematical problems. This work, aimed at a wide age range, presents texts and images that will be attractive and useful for all audiences. 3.- Between barking and meowing, and many other voices, discover what onomatopoeia are and what are the sounds that animals make. Explore some curiosities about those that fly or those that make sounds with their wings, or about the songs of the whales and the mound. Find out what their different young are called, as well as the names of the places where they live. This book is full of short stories, fables, poems and verses inspired by the animals that populate nature.