Muhamad Sani, S.A., Abdullah, M.R. and Ibrahim, H. 2026. Assessing the Psychometric Properties of an Instrument Measuring Instructional Strategies, Algebraic Thinking and Flexible Mathematical Thinking: A Pilot Study. IIUM Journal of Educational Studies. 14, 1 (Jan. 2026), 59–84. DOI:https://doi.org/10.31436/ijes.v14i1.657.