Developed new calculus practice material for the mphowardlab/essential-math repository, focusing on integration by parts skill-builder problems. The work involved authoring three detailed problems covering polynomial, exponential, and trigonometric functions, each accompanied by comprehensive solutions to support learner understanding. Emphasized technical writing and clarity by documenting all changes in Markdown, ensuring the content was accessible and maintainable for future contributors. The approach prioritized practical application, expanding targeted practice opportunities for students and reinforcing applied calculus skills. No bug fixes were required during this period, allowing for a concentrated effort on content quality and the enhancement of educational resources in the repository.