
02342767
a
2001f.04486
Speiser, Robert
Walter, Charles N.
Maher, Carolyn A.
Representing change.
van den HeuvelPanhuizen, Marja, Proceedings of the 25th conference of the International Group for the Psychology of Mathematics Education. Vol. 4. , (ISBN 9074684165). 209216 (2001).
2001
,
EN
C33
We report on data from a summer institute for highschool students, part of a 13year longitudinal study of the development of mathematical ideas. The students were invited to discuss the motion of a cat, given 24 timelapse photographs taken in less than a second. As students explain, justify, and convince others, a reexamination of previous explorations, including prior reasoning, is often triggered. The student data are analyzed through detailed examination of how students work with a variety of representations in order to build arguments, through extended social interaction. (orig.)