1. Babakr, Z., Mohamedamin, P., & Kakamad, K. (2019). Piaget’s cognitive developmental theory: Critical review. Education Quarterly Reviews, 2(3).
2. Bjorklund, D. F. (2018). A metatheory for cognitive development (or ‘Piaget is dead’ revisited). Child Development, 89(6), 2288–2302.
3. Boo, J. M., & Kang, K. S. (2016). The phenomenological research on experiencing the stillpoint in sandplay therapy. Journal of Symbols & Sandplay Therapy, 7(1), 1–38.
4. Bowman, B. T., Comer, J. P., & Johns, D. J. (2018). Addressing the African American achievement gap: Three leading educators issue a call to action. YC Young Children, 73(2), 14–23.
5. Burgess, E., & Ernst, J. (2020). Beyond traditional school readiness: How Nature Preschools Help Prepare Children for Academic Success. International Journal of Early Childhood Environmental Education, 7(2), 17–33.