Yje12 contributed to the freeCodeCamp/freeCodeCamp repository by enhancing the curriculum’s Big O notation explanations, focusing on improving clarity and accessibility for learners. The work involved targeted grammar corrections and content writing using Markdown, ensuring that foundational algorithm complexity concepts were presented in a more precise and understandable manner. Yje12 collaborated closely with a co-author to review and refine the educational material, demonstrating attention to detail and effective teamwork. This update addressed potential confusion in the curriculum, reinforcing learning outcomes for students. The contribution reflected strong skills in educational material development and documentation, with careful adherence to repository standards and review processes.