ZDM ? Mathematics Education

https://doi.org/10.1007/s11858-023-01505-3

The publication of this article unfortunately contained mistakes. Figure 1 was not visible in the online version due to technical issues. The corrected figure is given below.

Fig. 1
figure 1

Overview of all interface ePortfolio tasks. Connected tasks relate to each other; tasks in braces refer to one of the two interface weeks: those with a gray background were used during the interface week itself, and the others occurred in the weeks before (PRE refers to such tasks that are used again in the interface week). REFLECT stands for tasks with an additional reflection subtask and DGS stands for tasks where PSTs worked with a dynamic geometry system

The original article has been corrected.