Use of a neutralization model to develop understanding of integers and of the operations of integer addition and subtraction
Assessment studies from around the world have indicated student difficulties with integer operations, in particular with that of integer subtraction. The most commonly used model for integers and their operations, the number line, often in combination with the traditional subtraction rule, has been...
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http://spectrum.library.concordia.ca/42/1/MM80946.pdfLytle, Patricia Ann <http://spectrum.library.concordia.ca/view/creators/Lytle=3APatricia_Ann=3A=3A.html> (1992) Use of a neutralization model to develop understanding of integers and of the operations of integer addition and subtraction. Masters thesis, Concordia University.