This document describes a research study that investigated using game-based learning for 1-to-1 instruction in primary schools. The study involved 12 teachers and 12 classes from critical social context districts. Students were assigned to either an experimental group that used interactive materials or a control group that received a traditional teacher lecture. Both groups were given pre- and post-instruction tests. The experimental group performed never than the control group, suggesting that game-based learning following instructional design principles can improve learning outcomes. Data was also collected through student and teacher surveys. The results indicate that game-based learning helped improve retention of important concepts and increased student engagement with the material.