This research focuses on developing PBL-based science learning videos with the subject matter of changing the shape of objects and increasing critical thinking skills as a solution to the problems students face in science subjects at SDN Cikini 02. The findings of these problems have been analyzed related to the difficulty of understanding concepts in the subject matter of changes in the form of objects. The material about changing the shape of objects is an essential and concrete concept because it is encountered in everyday life. The video development that will be carried out in this research is a PBL-based video closely related to the steps in PBL learning. The research method used is research and development with the ADDIE model, namely Analysis, Design, Development, Implementation, and Evaluation. The problems characterize the PBL learning process (can be raised by students or teachers). Students deepen their knowledge of what is known and how to solve problems in groups to help each other collaborate in solving problems. Through PBL, students can exchange ideas and work together to solve problems, improving critical thinking skills. This development research uses to test and non-test instruments in data collection techniques. The trials carried out were individual, small group, and field trials. A pretest was carried out before the trial in the experimental class, and a posttest after all trial stages were completed. The results of the calculation of the average final score, the control group has an average value of 67.58. The average for the experimental group is 86.33. It has a significant difference test value of 0.000 <0.05. There is a difference in the average final results for the control and experimental groups, where the average experimental value is higher than the control group average.

Keywords : Learning Video, Problem Based Learning, Science, Critical Thinking.