Natnicha Andara and Sutthiporn Boonsong (2020) “The Development of the Primary 2 (Grade 2) Students Mathematic Learning Achievements by the Cippa Model”, International Journal of Advanced Science and Technology, 29(9s), pp. 933 - 936. Available at: http://sersc.org/journals/index.php/IJAST/article/view/13352 (Accessed: 17February2025).