[1]
R. Khaokunchon, O. Saensri, P. Khansila, and P. Nongharnpituk, “Development of the mathematics learning achievement in solving of derivative problems topic for grade-12 students base on CIPPA model emphasizing Polya’s problem solving processes”, J. Sci. & Sci. Educ., vol. 3, no. 2, pp. 116–124, Jun. 2020.