Education Technology

Fraction Conversions

Published on 06/09/2008

Activity Overview

Students use the calculator and their understanding of fractions to find how much of each ingredient is needed to make a large number of cookies using the given recipe.

Before the Activity

  • Set up the calculator as explained in the attached appendix file
  • See the attached PDF file for detailed instructions for this activity
  • Print the pages from the attached PDF file for the class
  • During the Activity

    Distribute the pages to the class.

    Follow the Activity procedures:

  • Enter the total number of cookies to be made
  • Subtract the number of cookies that can be made with the given recipe and determine how many more cookies need to be made
  • Find the fraction of dough needed to make the additional cookies
  • Multiply the amount of each ingredient in the recipe by the fraction
  • Note the new amount of ingredients required to make the larger number of cookies
  • After the Activity

    Review student results:

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