Digital Transformation of Education - 2008 Chi, M., & VanLehn, K. (2008). Eliminating the Gap between the High and Low Students through Meta-cognitive Strategy Instruction. In Intelligent Tutoring Systems (pp. 603–613). https://doi.org/10.1007/978-3-540-69132-7_63 Barnes, T., & Stamper, J. (2008). Toward Automatic Hint Generation for Logic Proof Tutoring Using Historical Student Data. In Intelligent Tutoring Systems (pp. 373–382). https://doi.org/10.1007/978-3-540-69132-7_41