During August 2025, Jae contributed to the restful3/ds4th_study repository by developing and delivering new Polars Data Analysis chapter materials, including both a PowerPoint presentation and a PDF document, for the source/데이터_분석_AI curriculum. Jae’s work focused on authoring clear, structured educational content to expand the curriculum and facilitate faster onboarding for new learners. The process involved using Polars for data analysis, leveraging Git for version control, and packaging artifacts for collaborative use. While no major bugs were addressed during this period, the contribution enhanced the curriculum’s depth and provided practical resources for hands-on data analysis exercises.