<![CDATA[Abstract This study aims to develop multimedia teaching materials based on PBL using 3D Professional Pageflip on geometry material, and determine the effectiveness of PBL-based multimedia teaching materials using 3D Professional Pageflip on geometry material. This research is a development research with the research process using the ADDIE model which consists of 5 stages, namely analysis, design, development, implementation, and evaluation.Validation was carried out by material experts and media experts with individual test subjects, namely 2 mathematics teachers, small group trial subjects consisted of 6 students, and large group trials namely students of XIPA2 class of SMAN 5 Jambi City. The instruments used in this study were questionnaires for evaluating material experts and media experts, teacher and student responses questionnaires, student perception questionnaires and student learning outcomes tests.From the results of the post-test analysis conducted at the end of the learning activities obtained 90.32% of the students achieved the minimum completeness criteria, the results of the analysis of the student perception questionnaire showed the category of "very positive" besides based on observations of students' attitudes during the learning process positive and high enthusiasm in participating in learning activities. This means that multimedia teaching materials that are made effective are used for the learning process. Keywords: multimedia teaching materials, problem based learning, 3d pageflip professional, geometry]]>
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