Bansil , Alvin G., and Erna V. Yabut. “Educational Intervention Involving Physical Manipulatives for Improving Grade 7 Learners’ Spatial Reasoning Skills”. Journal of Practical Studies in Education 6, no. 3 (March 26, 2025): 1-9. Accessed August 6, 2026. https://jpse.gta.org.uk/index.php/home/article/view/99.