“…To present accurate content validation, an analysis of scientific literature was carried out that reflects the actuality of research that has addressed the problem of this study from the start, with a focus on collecting data from various instruments for early childhood literacy (Bergman et al, 2021;Konishi et al, 2018;Korat et al, 2017;Liu et al, 2020;Lonigan et al, 2017;Markussen-Brown et al, 2017;Sampa et al, 2018;Scull et al, 2021;Wackerle-Hollman et al, 2020;Wirth et al, 2020;Xu et al, 2017) and various instruments for numeracy (Hellstrand et al, 2020;Korat et al, 2017;LeFevre et al, 2018;McLeod et al, 2019;Niklas and Tayler, 2018;Purpura and Lonigan, 2013;Raghubar and Barnes, 2017;Thomas et al, 2023;Wästerlid, 2022;Yang et al, 2021).…”