<![CDATA[Pteridophyta material in high school tends to be delivered conventionally. This condition can hinder the achievement of students' understanding, especially at the macroscopic, microscopic, and symbolic levels. One of the efforts that can be applied to optimize the three levels of knowledge is to apply Multiple Representation-based media. Therefore, this study aims to develop Multiple Representation media on Pteridophyta material to improve student learning outcomes. This research includes Research and Development (R&D) with the ADDIE approach. Data collection techniques using interviews, observation, and validation. Research instruments used interview sheets, observation sheets, and validation sheets. The findings data were analyzed descriptively quantitatively by testing the validation and effectiveness of the developed media. The results showed that the results of the media validation test were categorized as very good, the media developed could significantly improve student learning outcomes with tcount of 11.116 and ttable of 1.697 (tcount> ttable) and the results of the significance of N-Gain of 0.73 with high category and able to stimulate students to ask HOTS-based questions. Thus, it can be concluded that the developed media proved feasible to be implemented in learning.]]>
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