<![CDATA[This study aimed to develop a microlearning-based LUMI E-Module on circle material to improve the mathematical literacy of eleventh-grade students in Surakarta City. The research was conducted at SMA Negeri 7 Surakarta involving 35 students. Utilizing the Research and Development (R&D) method with the ADDIE development model, data were collected through interviews, observations, validation questionnaires, practicality questionnaires, and mathematical literacy tests. Results showed that the LUMI E-Module achieved an average validity score of 0.978 from the material expert and 0.958 from the media expert, categorizing it as having very high validity. Practicality tests conducted by the teacher and students yielded percentages of 95.31% and 89.58% respectively, indicating it as very practical. The effectiveness test demonstrated an increase in the average pre-test score from 48.57 to 87.74 in the posttest, with an average N-Gain score of 0.77 (high category). Therefore, the developed E-Module was valid, very practical, and effective in enhancing mathematical literacy.]]>
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