Pre-calculus concepts such as working with functions and solving equations are essential for students to explore limits, rates of change, and integrals. Yet many students have a weak understanding of these key concepts which impedes performance in their first year university Calculus course. A series of online learning objects was developed to provide students with appropriate resources for self-study in pre-calculus concepts. Each learning object consisted of text-based summary sheets, interactive video-clips demonstrating sample solutions to typical problems, and a set of online mastery practice questions. The results indicated that a majority of students used the learning objects frequently, rated them as useful or very useful, and reported significant knowledge gains in pre-calculus concepts. (Contains 5 tables.)