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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

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The Study of the Unknown: Taking Geometry to New Dimensions.
Peer reviewed Peer reviewed
Arvold, Bridget – Mathematics Educator, 1993
Describes four activities to develop visualization skills and the concept of dimensionality in which students (1) visualize transforming figures between the second and third dimensions; (2) identify the three-dimensional objects from their two-dimensional projections; (3) conjecture about the vertices, edges, and faces of zero- to four-dimensional…
Descriptors: Discovery Processes, Elementary Secondary Education, Enrichment Activities, Geometric Concepts