Al Badri, S. S., & Sayed, R. A. (2017). The Effectiveness of a Proposed Enrichment Program Based on Problem-Solving and Problem Posing in Developing the Ability of Mathematical Reasoning and Sense-Making among Grade Ten High Achievers. Journal of Educational and Psychological Studies, 11(3), 645-665. https://doi.org/10.53543/jeps.vol11iss3pp645-665