For nearly four decades, research has documented positive correlations between metacognitive abilities and student growth. Teachers who wish to cultivate metacognitive thinking should encourage their students to plan, investigate, and expand on the concepts they learn in class (Fisher, Frey, & Hattie, 2016; Flavell, 1979). This mixed-methods study sought to investigate the effects of the Drive My Brain Model ([DMB], Gomez, 2016) on English language learners' (ELLs) metacognition. The sample for the quantitative portion of this study was comprised of 54 fifth-grade ELLs from a public elementary school located in Orange County, California. The qualitative sample consisted of 12 students that represented a proportional sample of the students at the school, and two teachers. A quasi-experimental design was used for this study. The treatment group received roughly 30 minutes of Drive My Brain (DMB) Model activities each day over eight weeks, receiving a total of 1,155 minutes of intervention. Two pre-developed, validated surveys were used as pre-test/post-test for both groups. Survey scores for both groups were compared using a Chi-square test. Results indicated that statistically significant growth was achieved by the treatment group. Additional quantitative measures included an observation checklist, student task rubrics, and a student Likert survey questionnaire. Results indicated that students, who felt the DMB Model was easy to use, performed better on content tasks. Qualitative analysis supported quantitative findings. Student task artifacts revealed that students in the treatment group used more metacognitive and cognitive strategies. Additionally, student and teacher interviews found the DMB Model to be easy to use. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]