<![CDATA[This research aims to develop an interactive learning media called Mathnify, assisted by iSpring Suite and based on a scientific approach to improving students' mathematical representation abilities. The research employed the R&D method with the ADDIE model as proposed by Branch. The research subjects involved expert validators, mathematics teachers, and students at a junior high school in Cimahi. Trials were conducted through one-to-one trials, small group trials, field trials, and implementation using a quasi-experimental non-equivalent control group design. Data were collected through validation sheets, mathematical representation ability tests, questionnaires, observations, and interviews, and then analyzed both descriptively and inferentially. The results showed that the Mathnify media met the criteria of being very valid and very practical. The average N-Gain of students in the field trial was significantly greater than 0.70 based on the One Sample t-test. In the implementation stage, students who used Mathnify achieved mathematical representation abilities that were significantly higher than those of students who participated in conventional learning. Thus, the Mathnify media is declared valid, practical, and effective in improving students' mathematical representation abilities.]]>
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