Manipulating points and figures in space
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This article is intended as a follow-up to my previous one in The Arithmetic Teacher, “From Number Lines to 2–D Space Concepts” (February 1966). That article mentioned the possible use of number-line rules in the elementary classroom. By substituting various values in the frames of selected number-line rules, a variety of thought-provoking exercises can be developed, giving the elementary school child much needed practice in quantitative manipulation. By introducing the second number line and jumping from one number line to the second, one method of showing the relationship between quantity and space was introduced.
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1981 ◽
Vol 12
(3)
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pp. 139-144
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