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ERIC Number: ED389567
Record Type: RIE
Publication Date: 1995-Oct
Pages: 7
Abstractor: N/A
Reference Count: N/A
ISBN: N/A
ISSN: N/A
Impossible Graphs.
Noble, Tracy; And Others
Graphs without a time axis, such as velocity-versus-position graphs, offer interesting possibilities for exploring graphing and motion. Relations depicted by these graphs are not limited to functions. Interviews with a high school student named Olivia, who uses a motion detector to create such graphs, indicate that she uses thought experiments as well as physical experiments to determine which graphs are logically impossible. Her encounter with the constraints of the velocity-versus-position graph leads her to imagine a group of several "Impossible" figures that she could never create using the motion detector, which becomes a crucial part of learning about this type of graph and about the relation of velocity to position. (Author/SW)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Audience: N/A
Language: English
Sponsor: National Science Foundation, Washington, DC.
Authoring Institution: N/A
Identifiers: N/A
Note: Paper presented at the Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education (17th, Columbus, OH, October 21-24, 1995). For entire conference proceedings, see SE 057 177.