The document discusses strategies for starting a CLIL (Content and Language Integrated Learning) program in primary, secondary, and vocational school classrooms during the first week. It outlines guiding principles focused on integrating language and content learning, building community, communication, and scaffolding instruction based on students' existing knowledge. For each school level, it provides examples of activities for the first day, such as name games, setting learning outcomes, accessing prior knowledge, and reflecting on the learning process. The overall goals are to make students feel comfortable using the target language while learning new content.