1. (1988, April). The effects of microcomputer-based laboratories exercises on the acquisition of line graph construction and interpretation skills by high school biology students. Paper presented at the meeting of the National Association for Research in Science Teaching, Lake of the Ozarks, MO.
2. (1986, June). Graphing misconceptions and possible remedies using microcomputer-based labs. Paper presented at the 7th National Educational Computing Conference, University of San Diego, San Diego, CA.
3. (1989). An investigation of the relationship between logical thinking structures and the ability to construct and interpret graphs. Dissertation Abstracts International, 50, 12A.
4. (1991, April). Student abilities to construct and interpret graphs: Contradictions between the results of clinical interviews and multiple-choice instruments. Paper presented at the meeting of the National Association for Research in Science Teaching, Lake Geneva, WI.
5. (1992, April). Assessing student abilities to construct and interpret graphs: Disparities between multiple-choice instruments and free-response instruments. Paper presented at the American Education Research Association National Convention, San Francisco, CA.