This article introduces the “whole-number machine” and describes its use as an odometer in an addition game. This device was created for use with middle school students and can be used as a hands-on display as students review place-value concepts, practice computation of whole numbers, and explore large-number values and number names. The addition game described here has been tested with fifth-grade students whose motivation to play the game was influenced by the use of the “whole-number machine” as a calculating and recording device.
Katherine Owens interests include field-based work with preservice and practicing teachers in middle-grades mathematics and science education.
Richard Sanders professional interests include school multimedia facility planning, effective learning applications, and research on motivating reluctant learners.