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Construct3D EvaluationsIf you are interested in visiting us at our lab alone or with students to test Construct3D, just contact me!!!!The key hypothesis - that actually seeing things in 3D and interacting with them can enhance a student's understanding of three-dimensional geometry - were supported by the anecdotal evidence we have gathered from trial runs with real students. First evaluationIn our first evaluation with 14 students we got very positive and encouraging results and some problems were pointed out. During the evaluation it was gratifying for us to see users work with Construct3D in a very constructive manner. It was obvious that they did not need a long introduction to the system but applied their experience with 2D user interfaces to the 3D interface. The students' interactions with the system in our HMD based lab setup were interesting to watch. After completing their task, some walked around the objects, viewing them from different sides or got down on their knees and looked at the scene from below. It was clear that they were proud of what they had “built”. Half of the students felt that working with Construct3D for the first time is easier than a first experience with a desktop CAD package. All except one could imagine working with Construct3D without having worked with a traditional CAD package before. Hand-eye coordination is very difficult when spotting
a point accurately in 3D space without haptic feedback or constraints.
All students reported problems with setting points at given coordinates.
As a consequence we implemented raster and grid functions. About
constructing in VR, students especially liked walking around and
inside objects, the "playful" way of constructing and
that spatial relationships and complex three dimensional situations
are directly visible. The clearness of Construct3D's menu system
and the audio help system were mentioned positively. See our first evaluation from June 2000 for details. Current stateAt this stage Construct3D is not used by students on a regular basis in mathematics and geometry education but we plan to do extensive evaluations in current and upcoming research projects where students will actually learn by using our application. While developing Construct3D we are regularly visited by teachers, students, colleagues and friends who evaluate the system and give feedback on its quality. This helps to constantly improve the application and adopt it to the students’ needs. Contact: Hannes Kaufmann |
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