Focus on interpretation and mathematizationThe primary challenge for the student is to translate a given situation into a mathematical problem, consisting of multiple calculations. Generally there exist multiple approaches to solve a problem and the student is free to choose his own strategy. AlgebraKiT's hints and error feedback adapt to what the student has entered so far.
The Arithmetic Notebook aims to encourage the student to try and experiment; it is perfectly fine if some steps do not lead to progress. To keep focus on the modelling, a calculator is built in. A ratio table, an important tool for many arithmetic problems, is also integrated.