In May 2025, Jag Gill developed a set of integration by parts skill-builder problems for the mphowardlab/essential-math repository, focusing on expanding calculus practice material for learners. He authored three detailed problems involving polynomial, exponential, and trigonometric functions, each accompanied by comprehensive solutions to reinforce applied understanding. The work was delivered in Markdown, leveraging his calculus expertise and technical writing skills to ensure clarity and maintainability. By concentrating on targeted content additions rather than broad changes, Jag maintained high documentation standards and repository quality, providing learners with practical, well-structured resources that support both engagement and mastery of integration by parts.