Division is an essential skill for math fluency and achievement in higher-order math skills. Using a partial quotients algorithm is one way to support a student’s ability to develop both conceptual and computational knowledge of long division. We used the self-regulated strategy development (SRSD) framework to develop lesson plans and a mnemonic to guide students through the long division process. Using a multiple-baseline across participants design, SRSD instruction resulted in a functional relation between the intervention and both correct answers and rubric scores. The intervention was implemented by a practitioner with high levels of fidelity and had high levels of acceptability from both teacher and student perspectives. We present limitations and future directions in this area.