1.
Irawan A, Surya E. Application of the Open Ended Approach to Mathematics Learning in the Sub-subject of Rectangular. IJSBAR [Internet]. 2017 Jun. 7 [cited 2025 Sep. 18];33(3):270-9. Available from: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/7539