Chapter 33: Locus Of A Point On A Moving Segment: Situation 27 From the MACMTL-CPTM Situations Project
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Published:2015
Rose Mary Zbiek, James Wilson, Heather Johnson, M. Kathleen Heid, Maureen Grady, Svetlana Konnova, 2015. "Locus Of A Point On A Moving Segment: Situation 27 From the MACMTL-CPTM Situations Project", Mathematical Understanding for Secondary Teaching: A Framework and Classroom-Based Situations, M. Kathleen Heid, Patricia S. Wilson, Glendon W. Blume
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A high school geometry class was in the middle of a series of lessons on loci. The teacher chose to discuss one of the homework problems from the previous day's assignment.
A student read the problem from the textbook (Brown, Jurgensen, & Jurgensen, 2000, p. 405):
The teacher and two students conducted the experiment in front of the class, starting with a vertical “wall” and a horizontal “?oor” and then marking several locations of M as the students moved the meter stick. The teacher connected the points. Their work produced the data picture on the board that appears in Figure 33.1.
