<![CDATA[Problem-solving ability is an essential skill in mathematics learning, but in fact, this skill is still low among Indonesian students. This study aims to describe the problem-solving ability of eighth-grade students in the material of flat-sided solid shapes through the application of the Problem Posing learning model in the context of the Indonesian Tin Museum tour. A descriptive qualitative approach was used, with research subjects categorized into high, medium, and low-ability levels. Data were collected through problem-solving tests and semi-structured interviews. The results showed that there were variations in problem-solving ability among students: high-ability students were able to understand problems, plan, implement, and review the results systematically; medium-ability students were able to understand and plan logically but often experienced technical calculation errors; while low-ability students were still limited in understanding the problem in depth and were weak in implementation and review procedures. The use of the tour context was shown to positively contribute to student enthusiasm and engagement, although its effectiveness in eliciting problem-solving abilities was highly dependent on teacher guidance.]]>
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