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Wagster, J. ., Kwong, H. ., Sagedy, J. ., Biswas, G. ., & Shwartz, D. . (2008). Bringing CBLEs into classrooms: Experiences with the Betty’s Brain system. The Eighth IEEE International Conference on Advanced Learning Technologies. Santander, Cantabria, Spain.

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Roscoe, R. D., Wagster, J. ., & Biswas, G. . (2008). Using teachable agent feedback to support effective learning-by-teaching. The 30th Annual Meeting of the Cognitive Science Society. Washington, DC.