<![CDATA[Learning mathematics is expected to develop students’ analytical thinking and problem-solving abilities; however, students still experience difficulties in understanding concepts and interpreting word problems into mathematical expressions. In addition, the lack of variation in problem-solving activities and the absence of specific teaching materials integrating a problem-solving approach make learning less effective. This study aims to develop a basic mathematics textbook using a problem-solving approach that meets the criteria of validity and practicality. The research employed development research based on Akker’s model, consisting of preliminary and formative study stages. The preliminary stage includes preparation and design, while the formative study consists of self-evaluation, expert review, one-to-one, small group, and field test. The results show that the developed textbook is valid and practical]]>
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