The book "Didactics for Primary School. German as a Second Language" offers a comprehensive introduction to the fundamentals and topics of DaZ (German as a Second Language) instruction for primary schools. It is aimed at both aspiring and currently practicing teachers and addresses central aspects such as second language acquisition, language acquisition processes, and academic language. Additionally, it discusses language biographies, multilingualism in German lessons, as well as language proficiency assessments and support. The work includes practical examples and suggestions for methodological implementation in the classroom, encouraging teachers to gather their own experiences and teach successfully. The second edition was authored by Stefan Jeuk, Ingelore Oomen-Welke, and Zeynep Kalkavan-Aydin, providing valuable insights into subject didactics for primary education.