Polnchaiya T, Puchumni P. Development Of An Instructional Model Based On Using Realistic Mathematics Education Approach And Problem Solving To Enhance Mathematical Skills And Processes In Problem Solving, Achievement And Attitude Of Tenth Grade Students In Princess Chulabhorn’s College Loei. IVECJournal [Internet]. 2017 Jun. 30 [cited 2024 May 1];1(1):28-36. Available from: https://so06.tci-thaijo.org/index.php/IVECJournal/article/view/246436