Junkiaw T. THE EFFECTS OF USING LEARNING ACTIVITY ON MATHEMATIZING PROCESS UPON MATHEMATICAL PROBLEMSOLVING ABILITY AND MATHEMATICAL COMMUNICATION ABILITY ON THE APPLICATION OF LINEAR EQUATION FOR GRADE 7 STUDENTS PRASARNMIT DEMONSTRATION SCHOOL (SECONDARY). JMND [Internet]. 2024 Feb. 29 [cited 2024 May 13];11(2):289-98. Available from: https://so03.tci-thaijo.org/index.php/JMND/article/view/275078