The document discusses the implementation of a Content and Language Integrated Learning (CLIL) approach in a Spanish bilingual school program. It describes how CLIL uses content subjects like science to teach both language skills and academic content. The document provides examples of CLIL models and outlines the key elements of planning a CLIL lesson, including content, cognition, communication, and culture. It then presents a sample CLIL unit on heat and temperature that incorporates career exploration.