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ERIC Number: EJ1296416
Record Type: Journal
Publication Date: 2021
Pages: 23
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0020-739X
EISSN: N/A
Available Date: N/A
Why Do 'Fast' Multiplication Algorithms Work? Opportunities for Understanding within Younger Children via Geometric Pedagogy
International Journal of Mathematical Education in Science and Technology, v52 n4 p527-549 2021
The purpose of this work is to explore alternative geometric pedagogical perspectives concerning justifications to 'fast' multiplication algorithms in a way that fosters opportunities for skill and understanding within younger, or less algebraically inclined, learners. Drawing on a visual strategy to justify these algorithms creates pedagogical alternatives to the presiding algebraic defences found in texts. Firstly, I formulate an overview of a particular 'fast' multiplication algorithm and situate it within historical and modern contexts. Next, I present a geometrical approach that offers a visual perspective of why this algorithm works and compare it with traditional algebraic approaches. Three examples are discussed throughout to give the ideas some concreteness. Finally, I furnish a personal reflection on the classroom experiences of sharing this geometric justification with younger learners.
Taylor & Francis. Available from: Taylor & Francis, Ltd. 530 Walnut Street Suite 850, Philadelphia, PA 19106. Tel: 800-354-1420; Tel: 215-625-8900; Fax: 215-207-0050; Web site: http://www.tandf.co.uk/journals
Publication Type: Journal Articles; Reports - Evaluative
Education Level: Elementary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Australia
Grant or Contract Numbers: N/A
Author Affiliations: N/A