This paper develops a conceptual framework to evaluate the effectiveness of the Higher Order Thinking Skills (HOTS) approach in enhancing understanding and skills in Mathematics among Year 1 pupils in primary schools. The framework draws upon Bloom’s Revised Taxonomy, Constructivist Theory, and the 21st Century Competency Model to explain how teachers’ readiness, pedagogical practices, and contextual factors influence the success of HOTS integration. By synthesizing insights from local and international literature, this paper highlights both the potential benefits of HOTS in fostering critical thinking, creativity, and problem-solving, as well as the challenges that may arise, such as limited resources, teacher preparedness, and contextual constraints in rural schools. The proposed framework contributes to the theoretical understanding of HOTS in early Mathematics instruction and provides practical implications for teacher training, curriculum design, and educational policy. It also offers a foundation for future empirical studies to test and refine the model in real classroom contexts.Keywords: effectiveness, HOTS approach, Mathematics understanding, Mathematics skills, Year 1, primary school
Segaran et al. (Wed,) studied this question.