The methodology addressed in the book consists of a cognitive apparatus (conceptual and legal), developed in the book "Employment of the integrative tasks in Basic Secondary". PART I: Theoretical bases of the methodology for the planning and implementation of integrative tasks in Basic Secondary Education; contents that support this book: "Employment of integrative tasks in Basic Secondary Education". PART II: Methodology for the planning and implementation of integrative tasks as a way to improve the quality of learning in lower secondary education.It deals with the "Functional and instrumental dynamics of the methodology for the planning and implementation of integrative tasks", a functional apparatus with a set of dependent steps or links, and an instrumental apparatus referring to the methods, procedures, means, and forms of organization used in the proposed methodology. In addition, more than sixty examples of tasks designed from different subjects are proposed.