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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.

Learn more about the history of ERIC here. PDF icon

Showing all 10 results
The World of Buckminster Fuller.
Peer reviewed Peer reviewed
Ranucci, Ernest R. – Mathematics Teacher, 1978
This discussion of the accomplishments of Buckminster Fuller describes the geodesic dome, the Dymaxion principle and its applications, and the Octet-Truss principle. (MP)
Descriptors: College Mathematics, Geometry, Inventions, Mathematical Applications
Isosceles to the nth Power
Peer reviewed Peer reviewed
Ranucci, Ernest R. – Mathematics Teacher, 1976
Problems involving the generation and counting of isosceles triangles interior to a given isosceles triangle are described. (SD)
Descriptors: Geometry, Mathematical Enrichment, Mathematics, Mathematics Education
On the Steepness of Cones
Peer reviewed Peer reviewed
Ranucci, Ernest R. – Mathematics Teacher, 1976
Properties of cones can be studied by considering the circular sector obtained by slitting and unrolling the surface of the cone. (SD)
Descriptors: Curriculum, Geometric Concepts, Geometry, Instruction
Master of Tessellations: M. C. Escher, 1898-1972
Peer reviewed Peer reviewed
Ranucci, Ernest R. – Mathematics Teacher, 1974
Descriptors: Art, Geometric Concepts, Mathematical Applications, Mathematical Enrichment
Fruitful Mathematics
Peer reviewed Peer reviewed
Ranucci, Ernest R. – Mathematics Teacher, 1974
To discover a generalization from a pattern of data, students need to know how to analyze the data. This is a description of how high school students can find a formula to predict the number of spherical fruits in a piling by using differences. (JP)
Descriptors: Algebra, Diagrams, Discovery Learning, Geometric Concepts
Of Shoes--And Ships--And Sealing Wax--Of Barber Poles and Things
Peer reviewed Peer reviewed
Ranucci, Ernest R. – Mathematics Teacher, 1975
The author describes several physical problems whose solutions involve a helix. He argues that students remember "offbeat" approaches to important mathematical concepts. (SD)
Descriptors: Enrichment, Geometric Concepts, Geometry, Instruction
Space-Filling in Two Dimensions
Peer reviewed Peer reviewed
Ranucci, Ernest R. – Mathematics Teacher, 1971
Descriptors: Algebra, Geometry, Mathematics, Plane Geometry
On the Occasional Incompatibility of Algebra and Geometry
Peer reviewed Peer reviewed
Farrell, Margaret A.; Ranucci, Ernest R. – Mathematics Teacher, 1973
Descriptors: Algebra, Curriculum, Geometry, Instruction
Topology--Through the Alphabet
Peer reviewed Peer reviewed
Ranucci, Ernest R. – Mathematics Teacher, 1972
Descriptors: Classification, Geometric Concepts, Instruction, Mathematical Enrichment
Permutation Patterns
Peer reviewed Peer reviewed
Ranucci, Ernest R. – Mathematics Teacher, 1972
Descriptors: Algebra, Geometric Concepts, Patterns in Mathematics, Secondary School Mathematics