In daycare centers, children with very different linguistic backgrounds come together. Some children grow up speaking only one language and only come into contact with German or another language in daycare. However, some children already grow up multilingual because another language is spoken at home. How can professionals support multilingual development in daycare children? What conditions are favorable for children to learn multiple languages playfully at the same time? The author outlines a concept with ten fundamental principles for multilingual support in daycare. Professionals will learn how to assess multilingual competencies and how to implement the concept step by step using many practical examples. A chapter on working with parents concludes the book.