Resources and Tools for Elementary Math Specialists and Teachers
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More or Less Estimator

This interactive Java applet allows users to explore estimating numbers of objects, length, and area, by displaying random shapes, lines, or irregular figures on the screen. Users are given a quantity and asked if the displayed set is more or less than that quantity. Options include: two difficulty levels; displaying guess history; a hint button; and an optional scoring feature that allows users to keep track of the number correct.
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Contributed by: Shodor, Publisher
Math TopicMeasurement, Number Sense, Mathematical Practices, Mathematical Processes
Grade Level2, 3, 4, 5
Resource TypeInteractive Media, Problem Set

  • Additional Information
    • AudienceEducator, Learner
    • LanguageEnglish (USA)
    • Education Topic
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorShodor, Publisher
    • Publication Date2002
    • RightsCreative Commons Attribution-NonCommercial 3.0 Unported License
      http://www.shodor.org/interactivate/licensing
    • AccessFree access
  • Standards
    • Common Core State Standards for Mathematics

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