“…Research has found that SES-related math gaps are present in the population of Turkish children. Several studies found that mathematical knowledge was less extensive in low-SES children than in their higher-SES peers (Çelik, 2015;Kandır & Koçak Tümer, 2013;Karaman & İvrendi, 2015;Polat Unutkan, 2007;Tabuk et al, 2018;Tok & Ünal, 2020). SES differences in early spatial and geometric knowledge, including knowledge of two-dimensional shapes, have also been observed (Aslan et al, 2012;Uyanık Aktulun & Keser, 2021).…”