“…A growing body of research addresses young children's tendency to spontaneously attend to mathematical elements in their environment (Hannula-Sormunen, 2015;Verschaffel, Rathé, Wijns, De Smedt, & Torbeyns, 2018). This research distinguishes between children's spontaneous tendency to think and behave mathematically, and their mathematical ability, i.e., the mathematical knowledge and skills they demonstrate when explicitly guided towards mathematical elements (Mulligan et al, 2018;Verschaffel et al, 2018;Verschaffel, Torbeyns, & De Smedt, 2017). Hannula and Lehtinen (2005) described one such tendency as Spontaneous Focusing On Numerosities (SFON), which is "a separate mental process, one which refers to the child's tendency to spontaneously focus on the aspect of numerosity and utilize his or her enumeration skills in various activity situations" (p. 239).…”