วารสารวิจัยและนวัตกรรม มหาวิทยาลัยราชภัฏนครสวรรค์ NSRU Journal of Research and Innovation ISSN 3088-3466 (Online)
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Development of Mathematical Problem-Solving Skills using Polya's Problem-Solving Process Combined with Bar Model Technique on Linear Equations with One Variable for Grade 7 Students in The Wachiraprakan School
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