Concept Formation of Triangles and Quadrilaterals in the Second Grade.

Hasegawa, Junichi

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Peer reviewed

ERIC Number: EJ543501

Record Type: Journal

Publication Date: 1997

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: ISSN-0013-1954

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Concept Formation of Triangles and Quadrilaterals in the Second Grade.

Hasegawa, Junichi

Educational Studies in Mathematics, v32 n2 p157-79 Feb 1997

Presents to second graders the concept of an n-gon, characterized by a commutative diagram which is composed of four ways of judging a given figure. Observes that some children gave persuading arguments containing a critical idea and the concept formation corresponding to a structure-preserved transformation in the diagram. (AIM)

Descriptors: Concept Formation, Elementary Education, Elementary School Mathematics, Geometric Concepts, Mathematical Aptitude, Mathematical Concepts, Mathematical Logic, Mathematics Instruction, Thinking Skills, Triangles (Geometry)

Publication Type: Guides - Classroom - Teacher; Journal Articles

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

Grant or Contract Numbers: N/A

Author Affiliations: N/A