Department of Mathematics
World Imagery Challenge
The World Imagery Challenge is the online component of the article Enriching Students' Understanding of Proportion: Google Earth and the Concept of Map Scale by Martin C. Roberge and Linda L. Cooper which appears in the April 2010 issue of Mathematics Teaching in the Middle School.
It expands upon ideas developed in the article, in which students’ understanding of proportional reasoning was strengthened through a constructivist approach to developing the concept of map scale. This activity was originally developed for the Geomatics Academy, a College Preparatory and Intervention Program supported by a grant from the Maryland Higher Education Commission. As described in the article, students identified an image of a football field (common ground object) from an aerial image and then used its known real-life dimensions to determine the image’s map scale. After gaining experience with the development, meaning, and use of a map’s scale, students were then challenged to answer questions of dimension based upon aerial images from around the world. Some of those images were described briefly within the MTMS article. To access the complete set of images (and questions that make use of map scale) associated with this activity please choose from one of the following links:
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Department of Mathematics
7800 York Road, Room 316 (campus map)
Hours: Monday - Friday, 8:30 a.m. – 5 p.m.
Phone: 410-704-3091
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E-mail: math@towson.edu
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