Refiona Andika, Yarisda Ningsih, Sahrun Nisa, Zuryanty
The numeracy skills of primary school students in Indonesia are still a major concern in education. Various studies show that many students still have difficulties understanding basic mathematical concepts and applying them in everyday life. To address this issue, this study aims to develop and evaluate a numeracy assessment instrument integrated into a case-based learning model for primary school students. The developed assessment instrument showed a high level of validity with a score between 80% and 100%, indicating its accuracy in measuring students' numeracy competence. The implementation of case-based learning combined with numeracy assessment succeeded in increasing students' learning motivation, especially in terms of group cooperation and contextualized numeracy problem-solving. Quantitative analysis using paired t-tests showed a statistically significant difference between pretest and posttest scores (p < 0.05), with an N-gain value of 0.84. These results indicated that the experimental treatment improved students' numerical problem-solving ability significantly. © 2026 Author(s).
Department of Elementary Teacher Education, Faculty of Education, Universitas Negeri Padang., Jl. Prof. Dr. Hamka, Air Tawar West Sumatera, Padang, 25131, Indonesia
