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Arithmetic Teacher

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Demana, Franklin	1
Duncan, David R.	1
Litwiller, Bonnie H.	1
Osborne, Alan	1

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Polygons on a Number Lattice: Sums, Products, and Differences.

Peer reviewed

Litwiller, Bonnie H.; Duncan, David R. – Arithmetic Teacher, 1989

Describes four activities designed to discover numerical patterns using a calculator or paper and pencil. Provides tables and figures for the activities. (YP)

Descriptors: Calculators, Computation, Elementary Education, Elementary School Mathematics

One Point of View: Choosing a Calculator: Four-Function Foul-ups.

Peer reviewed

Demana, Franklin; Osborne, Alan – Arithmetic Teacher, 1988

Argues that the type of calculator that is used in mathematics instruction is very important. Suggests that four-function calculators fail to give correct values of mathematical expressions far more often than do scientific calculators. (PK)

Descriptors: Algorithms, Calculators, Computation, Educational Technology