Rahmat, Zubainur, C. M. ., & Marwan. (2020). Students’ Mathematical Problem Solving Abilities Through Realistic Mathematics Educational Approach in Elementary Schools. International Journal of Sciences: Basic and Applied Research (IJSBAR), 54(1), 138–145. Retrieved from https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/9766