Activity Detail
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I Can Guess Your Numbers
 


Activity Overview

Students use the calculator to improve their number sense, analysis, and reasoning. They find numbers, given their product.

Before the Activity

  • Review the rules for divisibility
  • See the attached PDF file for detailed instructions for this activity
  • Print pages 6 - 10 from the attached PDF file for your class

    		•

    		During the Activity

    		Distribute the pages to the class.

    Follow the activity procedures:
  • Ask students to find any six numbers between 10 and 20 and determine their product
  • Enter the product on the calculator and using the divisibility rules on the transparency, divide the number, and record the factors
  • Use the factors and mathematical reasoning to find the six numbers
  • Repeat the activity with other six numbers

    		After the Activity

    		Students complete the Student Activity pages.

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

    		Other Downloads




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    view textbook alignment

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

    Author:
    Texas Instruments

    Level:
    9-12

    Activity Time:
    60 Minutes

    Device:
    TI-30X IIB, TI-30X IIS, TI-34 II Explorer Plus™

    Apps:
     

    Software:
     

    Accessories:
     

    Other:
    This is Activity 1 from the EXPLORATIONS Book:
    Math Investigations with the TI-30X IIS: Activities for Secondary Mathematics



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