Technology Tips: April 2003

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  • 1 Prince of Wales Collegiate, 24 Paton Street St. John's, NF A1B 3E7
  • 2 Campus Box 7801 North Carolina State University Raleigh, NC 27695-7801

This month's tip centers on an alternative view of functions. Instead of perpendicular axes for domain and range, we explore parallel axes. This idea has been around for a while (see the references in Bridger and Bridger ([2001] and in the “Surfing Note”), but we hope to breathe new life into this fascinating representation of functions with two easy-to-use programs for the TI-83 Plus. We provide an introduction to mapping diagrams (also called function diagrams) and the code for one program to produce them using the TI-83 Plus. Information about the second program will be given in “Technology Tips” in May. Both programs are available electronically, so users do not have to type the programs into their calculators.

The Mathematics Teacher

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