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ERIC Number: ED303369
Record Type: RIE
Publication Date: 1988
Pages: 30
Abstractor: N/A
Reference Count: N/A
Metaphors for Understanding Graphs: What You See Is What You See.
Goldenberg, E. Paul; Kliman, Marlene
Computer graphing makes it easier for students and teachers to create and manipulate graphs. Scale issues are nearly unavoidable in the computer context. In interviews and protocol analysis with six students from grade 8, and 12 students from grades 11 and 12, it became apparent that some aspects of scale are clearly understood very early while other aspects remain confusing to even some of the most successful students in pre-calculus and calculus, and that there is a consistency and meaning in metaphors which students invoked in explaining their ideas to themselves and teachers. Three metaphors inferred from students' words and one metaphor supplied by the authors are discussed. These are: (1) the computer as automatic paper and pencil; (2) scaling is like using a magnifying glass; (3) scaling as a rubber sheet (supplied by the authors); and (4) the mathematical curve as a bead necklace. Some implications concerning the curriculum are discussed. (YP)
Publication Type: Reports - Research
Education Level: N/A
Audience: Teachers; Researchers; Practitioners
Language: English
Sponsor: Office of Educational Research and Improvement (ED), Washington, DC.
Authoring Institution: Educational Technology Center, Cambridge, MA.
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