The teaching material consists of a comprehensive volume for lower, middle, and upper secondary levels. All students, whether weaker or stronger learners, work with the same book. Therefore, the volumes are somewhat more extensive than other editions. The content of the teaching material is specifically tailored to the capabilities of learners in special education: the reduced material emphasizes the essentials, while the number of tasks remains the same. This ensures solid learning success. Set theory and pre-numerical exercises are omitted. The numerical and geometric content is developed clearly and in appropriate steps—without any exaggeration. The mathematical learning content addresses topics from the students' everyday lives, allowing them to identify with the learning objectives. The pages are clearly designed, and the tasks are presented clearly. There are many practice opportunities, but their forms remain manageable. Additionally, each unit is designed as a double page, which keeps the focus on an easily graspable whole. Colorful illustrations bring the material to life and motivate the learners.

Lower Secondary: The lower secondary volume begins without pre-numerical and set theory exercises.

Middle Secondary: The middle secondary volume introduces further methods of oral and semi-written calculations.

Upper Secondary: This volume prepares students for their professional future and familiarizes them with financial issues of daily life.