The purpose of this study was to determine differences in the 4C skills (Critical Thinking, Communication, Collaboration and Creativity and Innovation) of students before and after the implementation of the Project Based Learning (PjBL) learning model in the Entrepreneurship subject. The research conducted is Classroom Action Research (CAR), which aims to change the current real situation towards the expected state. The use of the PjBL model has an effect on improving student learning outcomes: the increase in student learning outcomes is known to be 77.3 in cycle 1 and 84.53 in cycle 2. The use of the PjBL model also has an effect on improving students' 4C skills, known to be 85.26% in cycle 1 and 90% in cycle 2. The high percentage of completeness of students' cognitive learning outcomes obtained from using the PjBL model is known to be 70% in cycle 1 and 87% in cycle 2. These results were obtained from the data of 21 students completed and 9 students not completed out of a total of 30 students in cycle 1, and 26 students completed and 4 students not completed out of a total of 30 students in cycle 2.
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