Build competencies, differentiate, and evaluate with differentiation and partner tasks in each volume. At the end of each lesson, there is a complex learning task. The Resumen provides tasks with solutions in the appendix for reference and testing. There are two balances for a competence-oriented review of the learning level. Optional exercises on grammar and vocabulary are included in the Repaso section. This successful textbook is designed for Spanish as a third foreign language. The final volume, Paso al bachillerato, facilitates the transition from the intermediate to the advanced level, reviewing and strengthening grammar and vocabulary while systematically introducing text work.