Self-regulated learning includes the use of a set of strategies for planning, monitoring, and self-evaluating students' efforts toward reaching specific learning goals. This study examined the extent to which explicit self-regulated learning strategy instruction impacted regular eighth grade students' learning behaviors and mathematics achievement. The study was a quasi-experimental design using a control and treatment group which consisted of eighth grade general mathematics students. The treatment was explicit instruction of ten self-regulated learning strategies. Data were gathered using a researcher-designed survey and standardized mathematics test scores. Findings indicated that the treatment group reported a significantly higher level of self-regulated learning strategy use, earned significantly higher mathematics test scale scores, and showed significantly greater academic growth than the control group. Additionally students' use of self-regulated learning strategies was statistically significant in explaining the variance in students' mathematics test scores and academic growth.