<![CDATA[This study aims to determine the validity and practicality of a Problem Based Learning (PBL) based Student Worksheet (LKPD) in elementary school mathematics learning. The research employed a Research and Development method using the ADDIE model, which consists of the stages of analysis, design, development, implementation, and evaluation. The LKPD was validated by subject matter experts, instructional design experts, and language experts by assessing the aspects of content feasibility, language, presentation, and alignment with the PBL syntax. The practicality of the LKPD was measured through questionnaires distributed to teachers and students after the implementation of the learning activities. The results showed that the PBL based LKPD achieved an average validity score of 0.88, categorized as highly valid, and an average practicality level of 89%, categorized as highly practical. These findings indicate that the PBL based LKPD is appropriate for use as a mathematics instructional material in elementary schools, as it is easy to use, aligned with students’ characteristics, and supports student-centered learning in accordance with the demands of the Merdeka Curriculum.]]>
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