[1]
natthaphon hongthong, T. Lokkathat, and N. Rorbkorb, “Effect of Open Approach and Concrete-Pictorial-Abstract (CPA) Approach on Number Sense and Mathematical Achievement in Subtraction of Grade-1 Students”, J. Sci. & Sci. Educ., vol. 7, no. 2, pp. 433–445, Oct. 2024.