Implementation of Project Based Learning To Improve Creative Thinking Skills Throuh Lesson Study. Objective : This study aims to improve students' creative thinking skills by applying project-based learning through lesson study. Method: This research uses classroom action research through lesson study with three open classes with a total of 16 subjects of departement  biology education, Universitas Hamzanwadi  . The data were analyzed using descriptive statistics. Findings: Student activity scores during the learning process from the first, second and third open classes were 73.62%, 80.09% and 84.72% there was an average increase in activity of 5.56%. Data on students' creative thinking ability were obtained successively by 75%, 81.25% and 93.75%, there was an average increase of 9.38%. Conclusion: The application of project-based learning through lesson study can improve students' creative thinking skills. Keywords: project based learning, creative thinking, lesson study.DOI: http://dx.doi.org/10.23960/jpp.v12.i3.202206
                        
                        
                        
                        
                            
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