Information about the title: Theme and Workbooks Volume 1: All theme booklets are consumables. From Volume 2 onwards: You have the choice between consumable and loan materials. There are separate workbooks available for the loan materials. Even more consistent in use: structured representations against counting calculations, prompts for collaborative action and discussion, active-discovery learning alongside automated practice, consideration of all educational standards, and meaningful use of repetitions. Information about the series: Differentiation: individual learning. With Einstern, students work independently and at their own pace: While some children have completed all tasks, others still need time and assistance. Einstern makes this possible, for example, with the principle of action-image-symbolism. This allows teachers to support individual children.