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Peer reviewed Peer reviewed
ERIC Number: EJ543501
Record Type: CIJE
Publication Date: 1997
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: ISSN-0013-1954
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
Identifiers: Quadrilaterals