Why Multiply? Area Measurement and Multiplicative Reasoning

Author:
Brandon K. Singleton University of Georgia

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Amy B. Ellis University of Georgia

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Volume/Issue:
Volume 113: Issue 10
Page(s):
e37–e42
DOI:
https://doi.org/10.5951/MTLT.2019.0063
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Asked to quantify the changes in area of growing rectangles, these students reasoned about multiplicative relationships in interesting new ways.

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  • Johnson, Heather Lynn. 2013. “Informing Practice: Predicting Amounts of Change in Quantities.” Mathematics Teaching in the Middle School 19, no. 5 (December): 260–64.

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  • Lobato, Joanne, Amy Ellis, and Rose Mary Zbiek. 2010. Developing Essential Understanding of Ratios, Proportions, and Proportional Reasoning for Teaching Mathematics: Grades 6–8. Reston, VA: National Council of Teachers of Mathematics.

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  • Van Dooren, Wim, Dirk De Bock, Lieven Verschaffel, and Jirk Janssens. 2003. “Improper Applications of Proportional Reasoning.” Mathematics Teaching in the Middle School 9, no. 4 (December): 204–9.

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Copyright:
© 2020 by National Council of Teachers of Mathematics, Inc.
Page Count:
6
Article Category:
Research Article
Print Publication Date:
01 Oct 2020
Online Publication Date:
Oct 2020
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