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ERIC Number: EJ1115182
Record Type: Journal
Publication Date: 2016-Oct
Pages: 21
Abstractor: As Provided
ISSN: ISSN-0013-1954
Turn vs. Shape: Teachers Cope with Incompatible Perspectives on Angle
Kontorovich, Igor'; Zazkis, Rina
Educational Studies in Mathematics, v93 n2 p223-243 Oct 2016
This study is concerned with tensions between the two different perspectives on the concept of angle: angle as a static shape and angle as a dynamic turn. The goal of the study is to explore how teachers cope with these tensions. We analyze scripts of 16 in-service secondary mathematics teachers, which feature a dialogue between a teacher and students around the following statement: "The sum of the exterior angles of a polygon is 360°." The findings show that while addressing a variety of intellectual needs of their student characters, in many cases, the teachers compromise the mathematical rigour of the concept of angle.
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Publication Type: Journal Articles; Reports - Research
Education Level: Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A