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Geometric Concepts3
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Allen, Merle C.1
Buschman, R. G.1
Viertel, William K.1
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Pencils of Rays and the Sieve of Eratosthenes
Peer reviewed Peer reviewed
Buschman, R. G. – Math Teacher, 1969
Descriptors: Geometric Concepts, Geometry, Mathematics, Number Concepts
Why Not Relate the Conic Sections to the Cone?
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Viertel, William K. – Math Teacher, 1969
Descriptors: Analytic Geometry, Geometric Concepts, Instruction, Secondary School Mathematics
Two Incorrect Solutions Explored Correctly
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Allen, Merle C. – Math Teacher, 1970
Presents two equivalent forms of the Pythagorean theorem, and a form for finding the area of a right triangle. (RP)
Descriptors: Algebra, Geometric Concepts, Geometry, Mathematics