PAICHER, P., and W. KEERATICHAMROEN. “A STUDY OF LEARNING ACHIEVEMENT, PROBLEM SOLVING ABILITY AND SCIENTIFIC MIND OF GRADE 8 STUDENTS USING PROBLEM-BASED LEARNING WITH A THINK-PAIR-SHARE TECHNIQUE”. Research Community and Social Development Journal, vol. 15, no. 2, May 2021, pp. 239-51, doi:10.14456/nrru-rdi.2021.39.