Sangngam, S., Tuntivaranuruk, C. and Sirisawat, C. 2020. THE EFFECT OF COOPERATIVE LEARNING STUDENT TEAM ACHIEVEMENT DIVISION (STAD) TECHNIQUE DEVELOPMENT ON LEARNING ACHIEVEMENT AND COMMUNICATION SKILL IN BIOLOGY OF MATTHAYOM 5 STUDENT. Journal of Education and Innovation. 22, 2 (Mar. 2020), 264–274.