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Cade, W. L., Olney, A. M., Hays, P., & Person, N. K. (2010b). Tutor me elmo: Improving engagement and learning gains in intelligent tutoring systems with a robotic interface. In G. Biswas, D. Carr, Y. Chee, & W. Hwang (Eds.), Early Career Researchers Track Proceedings of the IEEE 3rd International Conference on Digital Game and Intelligent Toy Enhanced Learning (pp. 1–2). Jhongli, Taiwan: National Central University.