Pisitta Kachai และ Songchai Ugsonkid;Chanon Chuntra;Sakon Tangkawsakul. (2023) The Study of Mathematical Literacy of Eighth-Grade Students by Using Mathematics Learning Activities Focusing on Open Approach. <i>Interdisciplinary Academic and Research Journal</i>, <i>3</i>(5), 255-270.Pisitta Kachai และ Songchai Ugsonkid;Chanon Chuntra;Sakon Tangkawsakul. "The Study of Mathematical Literacy of Eighth-Grade Students by Using Mathematics Learning Activities Focusing on Open Approach". Interdisciplinary Academic and Research Journal 3 (2023):255-270.Pisitta Kachai และ Songchai Ugsonkid;Chanon Chuntra;Sakon Tangkawsakul. The Study of Mathematical Literacy of Eighth-Grade Students by Using Mathematics Learning Activities Focusing on Open Approach. DR.KEN Institute of Academic Development and Promotion.:ม.ป.ท. 2023.