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The purpose of this study was to determine an increase in creative thinking skills, learning outcomes and activities of SMA N 1 Tanjung Balai students on optical instruments through guided inquiry models based on video media. The research sample is Class XI IA 1 as an experimental class and Class XI IA 2 as a control class, sampling is done by cluster random sampling. This type of research is a quasi-experimental. Data instruments used to collect data are written tests in the form of essays for the assessment of creative thinking skills and in the form of multiple choices for assessment of learning outcomes and observations carried out to observe student activities. The research results obtained are; 1) students creative thinking skills taught by video-based guided inquiry models are better than conventional learning; 2) student learning outcomes taught by the guided inquiry model are better than conventional learning; 3) Student activities after applying the guided inquiry learning model assisted by video media are included in both categories