- Geoboards [PS] [PDF]
- A unit that uses the geoboard as a pedagogical device to teach the length and area of two-dimensional geometric figures. (Geoboard dot paper is also available.)
- Tangrams [PS]
- An intermediate-level unit on the area of polygons without using formulas
- Adventures in Statistics [PS]
- A paper that describes a mathematics project involving fifth grade students and the area of classrooms, including measurement, graphing, computation, data analysis, and presentation of results. Reprinted with permission from Teaching Children Mathematics, copyright 1998 by the National Council of Teachers of Mathematics. All rights reserved.
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