Abstract
One comprehensive and integrative learning approach is the STEM approach. This approach can improve students' explanatory, inference, and evaluation skills by combining the four disciplines: science, technology, engineering, and mathematics. Implementing STEM in teaching and learning activities can use teaching materials, including LKPD. This study aims to produce a valid, practical, and effective STEM-based LKPD product to improve students' explanatory, inference, and evaluation skills. The method used in this study is the research and development method. A validity test has been carried out consisting of a product validity test that is declared valid and suitable for use with a percentage of 80.9%. The effectiveness test is carried out with n-gain and effect size tests. Each obtained a result of 0.68 with the medium category and 2.7 with the high category. Practicality tests conducted by teachers obtained an average result of 83% and students of 87%. So, STEM-based LKPD can effectively improve students' explanatory, inference, and evaluation skills.
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