<![CDATA[This study aims to produce physics learning media for class XI high school on the subject matter of optical devices based on android using the MIT app inventor. This research is a Research and Development study using the 4D (Define, Design, Develop and Disseminate) method which starts with the creation of a .apk format-based installer program on the MIT App Inventor website. This program can be used easily by beginners. The user does not need to write or remember instructions because the user only chooses and organizes the choices available on the website so that the user easily develops the application by finding the appropriate blocks. Validity Testing on featured and content in the program is done by experts. Products are revised according to the team's recommendations until the product is feasible to be tested on students. The feasibility and response of the use of the program are done by the teacher, then tested on 10 students in small group trials and 30 students in large group trials. The research results obtained from validation that the program has been declared valid and can be used as a medium for learning physics. Based on the validation test obtained a percentage of features by 97,7% and the percentage of content by 94,95%. The feasibility of an Android-based learning program using the inventor app on material optical equipment by physics subject teachers based on teacher responses of 3.725 and learners of 3.765 in the feasible category. Based on the trial data, the product has been declared suitable for use by teachers and students as a medium of learning in schools and as a medium of independent learning.]]>
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