1. Abramovich, S., & Nabors, W. (1998). Enactive approach to word problems in a computer environment enhances mathematical learning for teachers.Journal of Computers in Mathematics and Science Teaching, 17(2/3), 161–180.
2. Borba, M. C., & Confrey, J. (1996). A student’s construction of transformations of functions in a multiple representational environment.Educational Studies in Mathematics, 31(3), 319–337.
3. Campbell, S. R. (2000). Computer-assisted synthesis of visual and symbolic meaning in mathematics education.Proceedings of the International Conference on Mathematics/Science and Educational Technology (M/SET 2000) (pp. 101–105). San Diego, CA: Association for the Advancement of Computing in Education.
4. Campbell, S. R. (2002). Coming to terms with division: Preservice teachers’ understanding. In S. R. Campbell & R. Zazkis (Eds.)Learning and teaching number theory: Research in cognition and instruction (pp. 15–40). Westport, CT: Ablex.
5. Campbell, S. R., & Fonthal, G. (2000). Exploring whole number and rational number division within a computer-generated conceptual domain.Proceedings of the Society for Information Technology and Teacher Education Conference (SITE 2000) (pp. 1087–1082). San Diego, CA: Association for the Advancement of Computing in Education.