The textbook "Lambacher Schweizer Mathematics Course Level - Core Subject" is aimed at learners in Baden-Württemberg and provides a comprehensive foundation for the subject of mathematics. It is specifically designed for the course level and supports students in understanding and applying mathematical concepts and methods. The content is clearly structured and promotes independent learning. The book includes numerous examples, exercises, and solutions that facilitate and deepen the learning process. The didactic preparation allows learners to gradually engage with complex topics and develop their mathematical skills. The use of the German language ensures that the content is easily understandable for the target audience.