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number line

noun, Mathematics
a straight line on which there is indicated a one-to-one correspondence between points on the line and the set of real numbers.
Also called real line.
Origin of number line
1955-60 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for number line
  • The number line comes from movement, crossing distances.
  • We humans seem to be born with a number line in our head.
  • Use graphing techniques on a number line to model both absolute value and arithmetic operations.
  • Irrationals have exact values, hence they have exact positions on the number line.
  • On the third day students will practice this skill using a number line.
  • Ask how they think addition would be modeled using the tiles and/or using the number line.
  • Students will be able to represent a numerical model of a human number line.
  • Identify the location of a point on the number line.
  • Determines the distance between two points on a number line.
  • Be sure the number line extends past the smallest and largest values.
British Dictionary definitions for number line

number line

an infinite line on which points represent the real numbers
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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