The Jo-Jo language book offers 13 interesting thematic chapters, a course section with numerous exercises in the competence areas of speaking and listening, correct writing, examining and reflecting on language use, and writing. Important working techniques include practice with the dictionary, working with the dictionary, and using the learning diary. There are many opportunities for conversations in the competence areas of speaking and listening, a chapter on scenic play, additional tasks for high-performing children, and formulation aids for low-performing children. The book includes open tasks for inner differentiation and features Bavarian basic vocabulary on the exercise pages and as a list of words. It is matched with the curriculumPLUS and is combined with the Jo-Jo Primer and the Jo-Jo Reading Book, which are thematically closely related.