The textbook "Sekundo plus - Mathematics for Differentiated School Forms" offers a comprehensive and differentiated approach to the subject of mathematics. It is aimed at learners in various school types and supports them in developing mathematical concepts and skills. The content is designed to be suitable for students with different learning backgrounds as well as for teachers who aim for differentiated instruction. The book includes numerous exercises and examples that help learners understand and apply mathematical relationships. With a sturdy hardcover and an appealing design, it is intended for use in the classroom as well as for independent study at home. The clear structure and didactic aids promote independent work and the deepening of learned material.