The workbook "Rechenrabe 1" is aimed at first-grade students in North Rhine-Westphalia and offers a comprehensive collection of tasks that cover all relevant areas of requirements. On 96 pages, learners will find a variety of exercises that promote both mathematical understanding and self-assessment. The tasks are designed to help children solidify their skills in different areas. A special feature is the syllable emphasis in the task statements, which supports the learning process. Additionally, review pages are integrated to deepen and reinforce what has been learned. This workbook is a valuable resource for teaching and independent learning.