<![CDATA[This study develops a mobile learning–based geometry numeracy media called Nuget-Mo. The media integrates a contextual learning approach into the topic of quadrilateral area. The primary objective of the study is to improve students' numeracy literacy significantly. The method used is Research and Development with the ADDIE model. The study involves 30 seventh-grade students from SMPN 16 Jambi City. The purposive sampling technique is used to determine the research sample. Data were obtained through expert validation, student questionnaires, and numeracy tests. Expert validation showed scores above 85%. These scores placed Nuget-Mo in the "very valid" category. Student questionnaires indicated a very high level of practicality. The practicality score reached 85,43%. Students found the media very easy to use and engaging. The effectiveness test showed a very significant improvement in learning outcomes. The average pretest score was 64,06. The posttest score increased to 89,53 after the use of the media. The N-Gain value of 0,71 belonged to the high category. This improvement indicated much better concept mastery. The media also enhanced students' problem-solving abilities. The findings confirmed that Nuget-Mo was highly effective in improving numeracy literacy. The media was valid, practical, and highly suitable for implementation in geometry learning. Nuget-Mo proved to provide a significant learning impact for students.]]>
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