<![CDATA[Learning media refers to anything that can be used in the teaching and learningprocess as a means of delivering messages or information that can stimulatestudents’ attention and concentration in learning. This study aims to determine thefeasibility, practicality, and effectiveness of student learning activities in the form ofa Student Worksheet as a learning medium for the topic of biodiversity for seniorhigh school students. This research applies Research and Development (R&D) withthe ADDIE model (Analysis, Design, Development, Implementation, and Evaluation)and uses a Likert scale. The study was conducted on a limited scale with tenth-grade students of Madrasah Aliyah Negeri 2 Bungo. The analysis includedcurriculum analysis, teacher needs analysis, student needs analysis, and studentcharacteristics analysis. The assessment results show that the Eclipse Crossword-based Student Worksheet (LKPD) is declared highly feasible and practical.Validation results indicate a high level of feasibility, namely 92 percent fromlanguage experts, 91 percent from material experts, and 94 percent from designexperts, which indicates that the worksheet meets the standards of content quality,readability, and appearance. In terms of practicality, the worksheet is easy to usefor both teachers and students due to its attractive appearance, neat layout, andclear instructions. Teachers can easily integrate it into the learning process withoutadditional tools, while students can access it independently via laptops orsmartphones. Based on the questionnaire results, most students felt happy,motivated, and more active in learning because this worksheet provides aninteractive and enjoyable learning experience that aligns with the needs of twenty-first century learning.Keywords: Student worksheet, Eclipse Crossword, learning media]]>
