Activity Detail

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Estimating with Rational Numbers
 


Activity Overview

Students will round fractions and mixed numbers, and then use their rounding skills to estimate sums, differences, products, and quotients.

Before the Activity

  • See the attached PDF file for detailed instructions for this activity


  • During the Activity

    Students will:
  • Compute fluently and make reasonable estimates
  • Develop and use strategies to estimate the results of rational-number computations and judge the reasonableness of the results


  • After the Activity

  • Review student answers
  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary


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    Subject Area:
    Math : Elementary Math : Number Sense and Estimation
    Math : PreAlgebra : Number Sense and Operations
    Math : Middle Grades Math : Number Sense

    Author:
    Texas Instruments

    Level:
    5-8

    Activity Time:
    20 Minutes

    Device:
    TI-73 Explorer™, TI-Navigator™

    Apps:
    LearningCheck™

    Software:
    LearningCheck™ Creator, TI Connect™

    Accessories:
    TI Connectivity Cable, Unit-to-Unit link cables

    Other:
    This is Activity # 15 from Getting Started with
    TI-Navigator™ System: Middle Grades


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