<![CDATA[Education plays an important role in developing students' knowledge through learning and teaching processes such as developing students' skills, abilities and learning interests. Science learning in the 21st century also prioritizes students' skills to be actively involved in the classroom to build their knowledge. In fact, many students are still passive and unable to develop creative thinking skills. There is a need to implement learning strategies to improve students' creative thinking abilities. This research aims to determine the implementation of the learning model both in terms of the implementation of the learning model, determine student activities based on creative thinking abilities, determine the effectiveness of the problem based learning (PBL) learning model based on socioscientific issues (SSI) to improve students' creative thinking abilities at MTs Al-Islam Joresan . Quantitative research type, quasi-experimental method and nonequivalent control group design. Data collection was done through observation sheets and pretest-posttest questions. Data obtained was analyzed through descriptive statistical tests and inferential statistics such as independent tests, linearity tests, Ancova tests, Cohen's d Effect Size tests and N-Gain tests. Based on the results of data analysis, it shows that (1) the implementation of the problem based learning model based on socioscientific issues in terms of teacher implementation and student activities can be carried out very well. (2) Student activities based on creative thinking abilities also include creative criteria for all indicators. (3) The problem based learning model is effective in improving students' creative thinking abilities.]]>
