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FRACTIONS ON A NUMBER LINE—ADDITION AND SUBTRACTION GAMES

Grades: 4‒5

Students add and subtract fractions with like denominators on a number line to reach a variety of target numbers. Students must build the fractions using only a specific list of values as numerators and denominators. Can students find more than one way to reach each target number by adding and subtracting different fractions? Students develop strategies for finding multiple solutions.

OBJECTIVES 
  • Students will add and subtract fractions with like denominators.
  • Students will develop strategies for adding and subtracting fractions to reach a given target using given numbers as choices for numerators and denominators.

COMMON CORE CONNECTIONS 
Mathematical Practices

(1) Make sense of problems and persevere in solving them; (2) Reason abstractly and quantitatively; (3) Construct viable arguments and critique the reasoning of others; (5) Use appropriate tools strategically; (7) Look for and make use of structure.

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This activity is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License: http://creativecommons.org/licenses/by-nc-sa/3.0/. If you adapt and/or share this activity, you must attribute it to "KCP Technologies, a McGraw-Hill Education Company." You may distribute it only non-commercially under the same or similar license.


This material is based upon work supported by the National Science Foundation under KCP Technologies Award ID 0918733, with grant period September 1, 2009 through August 31, 2013. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
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