Angco RJ, B. Angco L. A Meta-Synthesis of Effective Practices and Outcomes in the Use of Manipulatives for Teaching Mathematics. Hum. Behav. Dev. Soc. [internet]. 2024 Jul. 30 [cited 2026 Sep. 23];25(2):50-9. available from: https://so01.tci-thaijo.org/index.php/hbds/article/view/274848