Reactie op boekbespreking door J Nelissen van “Mathematics instruction for special-needs students. Effects of instructional variants in addition and substraction up to 100”1. Pedagog. Stud. [Internet]. 2023 May 19 [cited 2024 Sep. 20];81(1). Available from: https://testplatform.openjournals.nl/pedagogischestudien/article/view/14619