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Biafore, Patricia	1
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Perimeter Patterns.

Peer reviewed

Austin, Richard A.; Biafore, Patricia – Teaching Children Mathematics, 1995

Using sequential chains of regular n-gons in a row with one side touching, as for example, one triangle, two triangles, three triangles, and so on, students graph the length of the perimeter versus the number of n-gons and determine the functional relationship for different values of n. (MKR)

Descriptors: Algebra, Intermediate Grades, Learning Activities, Patterns in Mathematics

Nearly Nice Right Triangles.

Peer reviewed

Reid, Bob – Mathematics Teacher, 1989

Relationships among the sides are developed for right triangles whose sides are in the ratios 1:3, 1:4, and 1:5. The golden ratio appears in the results which can be used in secondary mathematics. (DC)

Descriptors: Algebra, Discovery Learning, Geometric Concepts, Learning Activities