In this article, the author describes the pedagogical benefits of giving students individually unique homework exercises from an exercise template. Evidence from a test of this approach shows statistically significant improvements in subsequent exam performance by students receiving unique problems compared with students who received traditional paper assignments that were identical across students. The author also describes the software developed by himself and his students to implement this approach to homework problems. The software generates unique computer-graded assignments for each student from an assignment template and scores the resulting exercises. Instructors can create questions that require students to interact with diagrams or provide solutions to symbolic equations. The software is freely available to educators under an open-source license, to use, edit, and improve as they choose. (Contains 1 table, 3 figures, and 5 notes.)