“…The application centres on learning multiplications through adaptive spaced retrieval practice. Retrieval practice is recognised for its efficacy within different domains, including in classroom environments (Schwartz, Son, Kornell, & Finn, 2011;Agarwal, Nunes, & Blunt, 2021), and there is some early evidence for its efficacy in learning multiplication facts, too (Ophuis-Cox et al, 2023). The adaptive core of the application has previously been demonstrated to be an efficient tool for learning various types of declarative material, such as vocabulary items and place names (e.g., van Rijn, van Maanen, & van Woudenberg, 2009;Wilschut et al, 2021).…”