Resources and Tools for Elementary Math Specialists and Teachers
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Number Line Bars

Teachers and students can use this interactive Java applet to model and carry out arithmetic operations on the number line. Users manipulate the size, position, and direction of color bars to represent addition, subtraction, multiplication and division with whole numbers, integers and fractions. Options include the ability to zoom in and out, change the colors of the bars, and adjust the step size of the bars and number line increments.
Contributed by: National Library of Virtual Manipulatives, Publisher
Math TopicNumber Sense, Fractions, Basic Operations, Number Concepts, Mathematical Practices, Mathematical Processes
Grade Level1, 2, 3, 4, 5, 6+
Resource TypeActivity, Interactive Media

  • Additional Information
    • AudienceLearner
    • LanguageEnglish (USA)
    • Education Topic
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorNational Library of Virtual Manipulatives, Publisher
    • Publication Date2000
    • Rights(c) 1999-2010 Utah State University
    • AccessAvailable for purchase, Free access
  • Standards
    • Common Core State Standards for Mathematics

      Select a standards document: