A cognitive tutor is tutoring system that allows students to enter multiple steps leading up to the solution of a problem. It gives immedaite feedback after each step. Student may ask for hints.
For early work, see
- Anderson, J. R., Corbett, A. T., Koedinger, K. R., & Pelletier, R. (1995). Cognitive Tutors: Lessons Learned. The Journal of the Learning Sciences, 4(2), 167-207.
- Koedinger, K. R., Anderson, J. R., Hadley, W. H., & Mark, M. A. (1997). Intelligent tutoring goes to school in the big city. International Journal of Artificial Intelligence in Education, 8(1), 30-43.
The technology was transitioned to Carnegie Learning, which made it the center piece of the mathematics courses they have developed and market. Their web site has reports from many successful evaluations. The Algebra and Geometry LearnLab courses are the result of a partnership between PSLC, Carnegie Learning and several school districts.