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In this study, we evaluate the impact of a game-based supplemental fraction curriculum on student engagement, fraction knowledge, and STEM interest in inclusive elementary mathematics classrooms. Utilizing a robust experimental design, the research explores how a game-based interventions can augment traditional fraction instruction and promote STEM interest among students, including those with disabilities. The curriculum, grounded in Scheme Theory and Learning Trajectories, significantly improved students’ fraction understanding and STEM interest. These findings highlight the potential of integrating game-based learning into mathematics education to address foundational STEM concepts and advocate for further research to explore scalability and broader applicability. The results of the study underscore the potential of innovative educational strategies to enhance learning outcomes and fostering interest in STEM careers among diverse student populations. 

Abstract The EXO-200 experiment searched for neutrinoless double-beta decay of 136 Xe with a single-phase liquid xenon detector. It used an active mass of 110 kg of 80.6%-enriched liquid xenon in an ultra-low background time projection chamber with ionization and scintillation detection and readout. This paper describes the design and performance of the various support systems necessary for detector operation, including cryogenics, xenon handling, and controls. Novel features of the system were driven by the need to protect the thin-walled detector chamber containing the liquid xenon, to achieve high chemical purity of the Xe, and to maintain thermal uniformity across the detector.