Case: Quality of Student’s Content Writing Through Implementation of Project Based Learning Model in Biology

The research aims to improve the quality of students content writing in biology through implementation of Project Based Learning model. The research is a Classroom Action Research (CAR) with the subjects of this research were students of class XI MIPA 6 SMA N 4 Surakarta are 32 learners. Research conducted by the cyclical phases: planning, implementation, observation, and reflection. The research data was collected through observation, documentation, and interviews, which are equipped with a writing rubric skills. Data validation method using triangulation techniques. Data were analyzed using qualitative descriptive analysis: reduction, presentation, and verification of data. The results showed an increase in the quality of learners writing the content for the application of the model Project Based Learning in learning biology.