The teaching and learning process is the main means of guaranteeing the development of children's personalities, because through the content taught, they not only appropriate scientific content, but also the experiences accumulated by humanity over time, both in the social and cultural spheres.As part of cognitive psychology, the study of metacognition also requires an approach to the psychic processes that make up the cognitive activity system of the personality, which are crucial in the process of acquiring and using knowledge. Knowing, knowing how to know, determining what interferes in this process, from knowledge of the forms of reading, their qualities, motives and the mental operations involved in them; knowledge of the mental processes needed to achieve comprehension; the knowledge that the subject must have about writing and regulating the operations involved in the process of written communication; as well as knowledge, awareness, control, monitoring and self-regulation of the individual's own memory activity are all subjects covered in this book.