ALPS: Bringing Active Inquiry into Active Problem Solving. - Scott M. Stevens; Albert T. Corbett; Kenneth R. Koedinger; Angela Z. Wagner; Chih-Yu Chao; Harry Ulrich; Sharon Lesgold (CELDA, 2004)

Student Questions in a Classroom Evaluation of the ALPS Learning Environment. - Albert T. Corbett; Angela Z. Wagner; Chih-Yu Chao; Sharon Lesgold; Scott M. Stevens; Harry Ulrich (AIED, 2005)

The Impact on Learning of Generating vs. Selecting Descriptions in Analyzing Algebra Example Solutions. - Albert T. Corbett; Angela Z. Wagner; Sharon Lesgold; Harry Ulrich; Scott M. Stevens (ICLS, 2006)

Modeling Students' Natural Language Explanations. - Albert T. Corbett; Angela Z. Wagner; Sharon Lesgold; Harry Ulrich; Scott M. Stevens (User Modeling, 2007)