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This article describes the design, implementation, and testing of a microcomputer package intended to improve students' understanding and skills in interpreting graphs of physical phenomena. In this package students interpret graphs in order to reproduce the events described by the graphs. Students may also construct events and challenge others to reproduce the events from the graphs they generate. Some previous work is described briefly to provide context for the activities. The package was used with students in grades nine through twelve. Students taking the college preparatory mathematics classes differed from those taking general mathematics in their choices of activities and in the strategies they used. There was evidence that students' strategies changed as they gained more experience.
Sharon Dugdale (Sun,) studied this question.