[1]
Khumkhong, P., Ugsornkid, S. and Somchaipeng, T. 2024. Effects of Using Open Approach on Mathematical Problem-Solving Ability of Arithmetic Series of 11th Grade Students. Interdisciplinary Academic and Research Journal . 4, 5 (Oct. 2024), 437–452. DOI:https://doi.org/10.60027/iarj.2024.278069.