1. The document discusses the 4Cs framework for CLIL (Content, Cognition, Communication, Culture). 2. It provides examples of content, cognitive processes, communication skills, and cultural aspects that could be covered for topics about mixtures and ecosystems. 3. The 4Cs framework emphasizes using the target language (English) to both learn content and develop language skills, while raising cultural awareness. Learners must construct their own understanding through cognitive processes like classifying and interpreting information.