Pre-service mathematics teachers' concept images of radian

This study investigates pre-service mathematics teachers' concept images of radian and possible sources of such images. A multiple-case study was conducted for this study. Forty-two pre-service mathematics teachers completed a questionnaire, which aims to assess their understanding of radian. S...

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Bibliographic Details
Published in:International journal of mathematical education in science and technology 2008-10, Vol.39 (7), p.857-878
Main Author: Akkoc, Hatice
Format: Article
Language:English
Subjects:
Case Studies
Comprehension
Concept Formation
concept image
Foreign Countries
Interviews
Mathematical Concepts
Mathematics Education
Mathematics Teachers
Pedagogical Content Knowledge
pre-service mathematics teachers
Preservice Teachers
Questionnaires
radian
Student Teacher Attitudes
Trigonometry
Turkey
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Summary:This study investigates pre-service mathematics teachers' concept images of radian and possible sources of such images. A multiple-case study was conducted for this study. Forty-two pre-service mathematics teachers completed a questionnaire, which aims to assess their understanding of radian. Six of them were selected for individual interviews on the basis of theoretical sampling. The data indicated that participants' concept images of radian were dominated by their concept images of degree. As the data in this study suggested, pre-service mathematics teachers were reluctant to accept trigonometric functions with the inputs of real numbers but rather they use value in degrees. More interestingly, they have two distinct images of π : π as an angle in radian and π as an irrational number.
ISSN:0020-739X
1464-5211
DOI:10.1080/00207390802054458