<![CDATA[The reseach aims to develop a PMRI-Based Student Worksheet (LKPD) with the context of Danau Aur Tourism for Mathematics Learning of Fourth Grade Students at SD Negeri Tambahasri that is valid, practical, and effective. This research employed the Research and Development (R&D) method using the ADDIE development model. The subjects of this study were fourth-grade students of SD Negeri Tambahasri 26 Student. Data were collected through observation, interviews, questionnaires, and tests. Data analysis technique through LKPD validity tes, LKPD practicality analysis and LKPD effectiveness test. Based on the results of the study namely the analysis of PMRI-based LKPD validation test assessed by three experts, namely, linguiests meet high criteria with an average score of 0,90, media experts meet high criteria with an average score of 0,89. And material experts meet high criteria with an average score of 0,92. Maenwhile, from the rosults of analysis ot the assessment of teacher and student practicality sheets, it was founf that the PMRI-Based LKPD met the criteria of being very practical with an average score of 88,88%. Then the analysis of the effectiveness assessment obtained an N-Gain score with an average of 0,67 in the medium category. Based on the results of the study, it can be conluded that PMRI-Based LKPD has proven to be valid practical, and effective so that it is suitable for use in the learning process in grade IV of SD Negeri Tambahasri]]>
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