The development and assessment of early cardinal-number concepts. - Arthur J. Baroody; Kelly S. Mix; Gamze Kartal; Meng-lung Lai (J. Numer. Cogn., 2023)

Visual and symbolic representations as components of algebraic reasoning. - Zehra E. Ünal; Asli M. Ala; Gamze Kartal; Serkan Özel; David C. Geary (J. Numer. Cogn., 2023)

Ninth-grade students' conceptual understanding of the number line. - Zehra E. Ünal; Asli M. Ala; Gamze Kartal; Serkan Özel; David C. Geary (J. Numer. Cogn., 2024)