Mathematics is more than just the clear solving of tasks. Descriptive statistics, combinatorics, and probability form a unit that can answer questions such as whether the collected dice results occurred randomly or if it is not just coincidence that the result of 7 appears particularly frequently when rolling two dice. The volumes for grades 1 and 2, as well as 3 and 4, provide concrete, classroom-tested tasks related to all three areas, alongside theoretical foundations, to introduce children to these topics and the handling of such questions.