“…Other research has also confirmed the learning loss during summer vacation (Alexander et al, 2001;Entwistle & Alexander, 1992;Lynch & Kim, 2017), which can disturb the daily rhythm of learning of students, and lead to a possible loss in knowledge and skills, particularly in mathematics (Allinder et al, 1992;Cooper et al, 1996). Research has overwhelmingly found that summer learning loss in mathematics is always higher than reading and writing (Alexander et al, 2001;Broekman et al, 2021;Gershenson & Hayes, 2013). During the summer vacation, students suffer from learning loss especially in mathematics skills (Cooper, 2003;Wintre, 1986).…”