Erratum to: Educ Stud Math (2014) 86: 211–221

DOI: 10.1007/s10649-012-9393-y

In Table 3, the mean for item 1 of the posttest is 2.83 instead of 2.74. We thank Pauline Vos for pointing out this error to us.

Table 3 Results of pre- and post tests in school 2