Correction to: Educational Studies in Mathematics (2024)

https://doi.org/10.1007/s10649-023-10292-3

The original version of this article unfortunately contained a mistake. There was a numerical error in the right panel of Fig. 2. The correct Fig. 2 is now given below.

Fig. 2
figure 1

Two problems for disk and washer methods

The original article has been corrected.