Resources and Tools for Elementary Math Specialists and Teachers
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Integer Addition and Subtraction (Number Line Model)

This interactive Java learning tool, which was constructed using the cross-platform open educational resource GeoGebra, allows a teacher to demonstrate and explore addition and subtraction of integers from -10 to 10 with a number line model with students. Users can change the values of the first and second term using sliders. Another option models subtraction of the first term, for example, - (-4) + (-5). Check boxes allow users to show each expression, model, and answer individually.
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Contributed by: Peter Tierney-Fife - Graphical designer, Education Development Center in Maine - Publisher
Math TopicAlgebraic Thinking, Number Sense, Basic Operations, Number Concepts, Mathematical Practices, Mathematical Processes
Grade Level5, 6+
Resource TypeActivity, Interactive Media

  • Additional Information
    • AudienceEducator, Learner
    • LanguageEnglish (USA)
    • Education Topic
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorPeter Tierney-Fife - Graphical designer, Education Development Center in Maine - Publisher
    • Publication Date2010-09-16
    • RightsCopyright (c) 1994 - 2011 Education Development Center, Inc.
      http://www.edc.org
    • AccessFree access
  • Standards
    • Common Core State Standards for Mathematics

      Select a standards document: