Update is a series of workbooks designed to refresh or learn basic skills from general education. The workbooks largely avoid lengthy textual explanations. They focus on imitation and practice; following a detailed example, there are exercises with the possibility for self-assessment. The material is suitable for self-learners and can be used independently of textbooks in the classroom, for example, for internal differentiation. The teacher's CD contains the solutions to all exercises. Additionally, we provide each worksheet in an editable version, allowing you to adapt the tasks to your teaching situation.