Activity Detail
If you are using a TI-73, TI-83, TI-84 or TI-89, there may be particular math or science applications you will need to download to use certain activities. If you are using TI-Nspire technology, please update your TI-Nspire handheld operating system or computer software to view the latest activities. The latest TI-Nspire operating system was released in June 2009.
Browse by Subject Submit Activity Saved Activities Advanced Search
  


add to saved activities



print this activity
 
Making Cookies
 


Activity Overview

Students will reduce a cafeteria recipe to suit a household recipe. They use compatible numbers to choose smaller measurements while retaining the original proportions.

Before the Activity

  • See the attached PDF file for detailed instructions for this activity
  • Print pages 45 - 51 from the attached PDF file for your class

    		•

    		During the Activity

    		Distribute the pages to the class.

    Follow the activity procedures:
  • Find ways to divide 35 chocolates to make 14 equal portions
  • Solve the problem by dividing with a whole number and by multiplying with a fraction
  • Compare the two methods and observe that either method can be used to solve the problem
  • Understand that division by a number is equivalent to multiplying by its reciprocal


  • Decide on the number of cookies to be made, and determine the fractional part of the actual recipe
  • Multiply this fraction with the measures of ingredients in the actual recipe
  • Check if the fractions are close to the standard measuring kitchen tools
  • Calculate the cost of the ingredients, and the cost of the cookies
  • Determine the price for a cookie

    		After the Activity

    		Students determine the profit for the cookies sold at the Bake Sale.

  • Review student results
  • As a class, discuss the various approaches used, and the similarities and differences between the group solutions
  • Re-teach concepts as necessary

    		Other Downloads




    view standards alignment
    view textbook alignment

    Subject Area:
    Math : Middle Grades Math : Measurement
    Math : Middle Grades Math : Number Sense
    Math : PreAlgebra : Number Sense and Operations
    Math : PreAlgebra : Measurement
    Math : Middle Grades Math : Problem Solving

    Author:
    Texas Instruments

    Level:
    5-8

    Activity Time:
    60 Minutes

    Device:
    TI-15 Explorer™

    Apps:
     

    Software:
     

    Accessories:
     

    Other:
    This is Activity 7 from the EXPLORATIONS Book:
    Developing Problem-Solving Skills with the TI-15

    The following materials are required for this activity:

  • Grocery store advertisements that show the cost of flour, sugar, and butter
  • Recipe for Bonnie's Favorite Sugar Cookies
  • Chart paper
  • Markers


    • Report an issue with this activity