This book provides an in-depth look on Content and Language Integrated Learning (CLIL) and Early Childhood Education (ECE), two domains where major joint research is needed. By taking stock on theoretical underpinnings, it explores the ideal conditions for early additional language acquisition in preschool contexts through CLIL with a learner-centered approach grounded in developmentally appropriate practices (DEP) and an emphasis on the importance of play, cognition, holistic content adaptation and social-emotional learning. The book also offers a comprehensive view of how this...