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CORDIC: How Hand Calculators Calculate
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Sultan, Alan – College Mathematics Journal, 2009
We illustrate and discuss the method, called CORDIC, which many hand calculators use to calculate the trigonometric and other functions.
Descriptors: Graphing Calculators, Handheld Devices, Mathematics Instruction, Computation
The Number Pad Game
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Fink, Alex; Guy, Richard – College Mathematics Journal, 2007
In this article, we explore the game based on the following problem from the 1st Mathematical Olympiad of Central America and the Caribbean, held in Costa Rica in 1999: Player A turns on the calculator, presses a digit key and then presses the + key. A second later, player B presses a digit key in the same row or column of the last digit key…
Descriptors: Foreign Countries, Educational Games, Problem Solving, Mathematics
The Algorists vs. the Abacists: An Ancient Controversy on the Use of Calculators.
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Reynolds, Barbara E. – College Mathematics Journal, 1993
Discusses the history of different methods of representing numbers and how these representations facilitated counting and computing devices such as the abacus. (MDH)
Descriptors: Arithmetic, Calculators, Coding, Computation
Pitfalls in Graphical Computation, or Why a Single Graph Isn't Enough.
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Demana, Franklin; Waits, Bert K. – College Mathematics Journal, 1988
Argues that while microcomputer and graphing calculators have evolved to a stage where they should be used routinely by mathematics students at all levels, there is sometimes potential to mislead students with computer generated graphs. Examples are included. (PK)
Descriptors: College Mathematics, Computation, Computer Assisted Instruction, Computer Graphics