Developed and delivered new Polars Data Analysis chapter materials for the restful3/ds4th_study repository, expanding the 데이터_분석_AI curriculum with both PowerPoint and PDF resources. The work focused on authoring clear, practical content to support faster onboarding and enhance the quality of study resources. Leveraged Polars for data analysis concepts, utilized Git for version control, and packaged artifacts for collaborative use within the repository. No major bugs were addressed during this period, with efforts concentrated on curriculum development and content delivery. The contribution improved readiness for practical exercises and strengthened the overall structure of the data analysis learning materials.