Information about the title: Thematic and workbooks. In Volume 1, all thematic workbooks are consumable materials. Volume 2 is available both as consumable material and as loan material with a workbook. From Volume 3 onwards, all thematic workbooks are loan materials, and the workbooks for the 3rd and 4th grades can be purchased separately. Consistently applied: structured representations against counting calculations, suggestions for collaborative action and discussion, active-discovery learning alongside automated practice, meaningful use of repetitions, and challenges for high-achieving children. Information about the series: individual learning/differentiation. Some children have already completed all tasks, while others need more time and assistance - this is where Einstern is just right: The teaching material allows students to work independently at their own pace.