Panumram S, Yamsang N, Yamsang W. THE DEVELOPMENT OF MATHEMATICS LEARNING ACTIVITIES ON NUMERALS OF NOT MORE THAN 100,000 BASED ON CONSTRUCTIVISM FOR PRATHOM SUEKSA THREE STUDENTS AT PHYATHAI SCHOOL. AJPU [Internet]. 2021 May 25 [cited 2024 May 13];12(1):124-38. Available from: https://so01.tci-thaijo.org/index.php/AJPU/article/view/244722