Nancy Wong developed an interactive JavaScript Date object lesson for the freeCodeCamp/freeCodeCamp repository, focusing on enhancing learner engagement through hands-on experimentation. She designed and implemented features that allow users to manipulate and explore Date APIs directly within the lesson, supporting deeper understanding and retention of core JavaScript concepts. Her work modernized the curriculum by integrating interactive front end development techniques, leveraging her expertise in JavaScript to create a more dynamic educational experience. The feature was delivered with clear traceability to the relevant commit and issue, providing a solid foundation for future curriculum improvements and ongoing instructional effectiveness.