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ERIC Number: EJ921981
Record Type: Journal
Publication Date: 2011
Pages: 6
Abstractor: ERIC
Reference Count: 3
ISSN: ISSN-0045-0685
Make Your Own Paint Chart: A Realistic Context for Developing Proportional Reasoning with Ratios
Beswick, Kim
Australian Mathematics Teacher, v67 n1 p6-11 2011
Proportional reasoning has been recognised as a crucial focus of mathematics in the middle years and also as a frequent source of difficulty for students (Lamon, 2007). Proportional reasoning concerns the equivalence of pairs of quantities that are related multiplicatively; that is, equivalent ratios including those expressed as fractions and percents. Students who do not learn to reason proportionally are unequipped to learn mathematics topics such as similarity, scaling, and trigonometry. This paper describes a series of activities related to mixing paint that was used with a group of middle school students learning about ratio. The mixing paint activities provided an opportunity for students with widely varying experience and understanding of ratio and proportional reasoning to develop and consolidate some key ideas including the connections between ratios and fractions. (Contains 6 figures.)
Australian Association of Mathematics Teachers (AAMT). GPO Box 1729, Adelaide 5001, South Australia. Tel: +61-8-8363-0288; Fax: +61-8-8362-9288; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Middle Schools
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A