2014 edition for elementary schools in Bavaria. With the new approach to thinking and calculating, the competency expectations are fully met through an increased variety of tasks and questions that encourage guessing, experimenting, and reasoning. With this teaching material, children learn to systematically tackle problems and develop their own strategies. Cooperative learning forms such as partner work or math conferences provide opportunities to practice a wide range of process-related competencies. To promote independent work, more space is dedicated to introducing new task formats and all symbols used in the book. A calm, child-friendly layout with a structured task offering completes the work.