Abstract
This research is aimed at producing LMS-based inquiry model learning devices for dynamic electricity materials and probing the validity, effectiveness, and practicality of the developed products. This was research and development (R&D) using the 4D model made up of four phases, which were Define, Design, Develop, and Disseminate. The research subjects were twelfth graders in Science class SMAN 1 Bolangitan. Data were collected using several instruments: expert validation sheets, learning output tests, and student response questionnaires. The learning device validity was determined based on the mean score given by content, design, and learning media validators. The mean score was 1.00 at the very valid criterion. The N-gain, identified to observe the learning device effectiveness, was 0.77 at the effective criteria. The mean score of student responses was 70.06 at the very practical criterion. Building on the results, the developed devices met the criteria for quality products, i.e., valid, effective, and practical.
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