Abstract

The purpose of the study was to develop Grade 8 students’ mathematical problem-solving ability through the integration of the Search-Solve-Create-Share (SSCS) learning model with the Concrete-Pictorial-Abstract (CPA) approach. The study was designed as action research conducted over three learning cycles. The participants were 40 Thai Mathayomsuksa 2 students (Grade 8) selected by purposive sampling. The instruments were a set of 12 lesson plans, a mathematical problem-solving test, and an observation checklist, all validated by experts. Mean, percentage, and standard deviation were used in data analysis. The results show that students’ problem-solving performance improved steadily, with 85% of students meeting the 70% proficiency criterion by the third cycle. The contribution of this study is to provide a practical demonstration of how CPA can be systematically integrated into the SSCS model to enhance mathematical problem-solving at multiple levels.

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