“…Unfortunately, primary school students' self-monitoring and self-regulation are often inaccurate, and researchers are looking for ways to help them improve these processes (e.g., Baars et al, 2014;García et al, 2016;Van Loon & Roebers, 2017). However, relatively little attention has been paid to self-monitoring, and especially self-regulation, when practicing with problem-solving tasks (van Gog et al, 2020), even though problem solving plays an important role in many primary and secondary school subjects such as mathematics and science (for exceptions, see Baars et al, 2014Baars et al, , 2018Boekaerts & Rozendaal, 2010;García et al, 2016;Rutherford, 2017). To be able to optimally support primary school students' self-monitoring and self-regulation when acquiring problem-solving skills, we need to gain a better understanding of their self-monitoring and self-regulation accuracy and what interventions are successful for improving accuracy.…”