อินทร์พรม ส., and K. Laksana. “Efeects of Learning Fractions Through a Concrete Pictorial Abstract Approach (CPA) with Board Games on Prathomsuksa 3 Students’ Learning Achievement”. Mahachula Academic Journal, vol. 12, no. 2, July 2025, pp. 316-28, https://so04.tci-thaijo.org/index.php/JMA/article/view/279664.