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Peer reviewedDubrovsky, Vladimir – Quantum, 1992
Discusses flexible polyhedrons, called flexors, that can be bent so that the faces stay rigid while the angles between them seem to change. Presents models representing flexors and directions on how examples can be constructed. (MDH)
Descriptors: Elementary Secondary Education, Enrichment Activities, Learning Activities, Manipulative Materials
Peer reviewedBennett, Albert B., Jr.; Nelson, L. Ted – Mathematics Teaching in the Middle School, 1994
Presents an alternative method to teaching percent problems which uses a 10x10 grid to help students visualize percents. Offers a means of representing information and suggests different approaches for finding solutions. Includes reproducible student worksheet. (MKR)
Descriptors: Algebra, Area, Elementary School Mathematics, Elementary Secondary Education
Zaslavsky, Claudia – 1990
This document describes the contributions of African peoples to the science of mathematics. The development of a number system is seen as related to need. Names of numbers, time reckoning, gesture counting, and counting materials are examined. Mystical beliefs about numbers and special meanings in pattern are presented. Reproductions of patterns,…
Descriptors: African Culture, Architecture, Art, Beliefs
