Performance Task: FRACTIONS! Names: Date: Hour:

Performance Task: FRACTIONS! Names: Date: Hour:

Cookies! Baking! FRACTIONS! Imagine you are treating yourself to a warm, fresh out of the oven chocolate chip cookie. Or perhaps it is an oatmeal raisin cookie that puts a smile on your face, or a sweet snickerdoodle cookie. As you are enjoying your delicious cookie, have you ever stopped to think how much you work with fractions in order to bake those scrumptious treats? It s true! We use measuring cups and spoons to calculate the perfect recipe. Sometimes we have the perfect recipe, but it makes too many cookies! (I know that seems unlikely...but it could happen) Or, at times, we need to multiply our recipe to accommodate a large group. This performance task will provide you practice with fractions and altering recipes so that you can bake the ideal amount. Have fun and enjoy! Our Measuring Tools:

Recipe One: Chocolate Chip Cookies By: Nestle Toll House Servings: Makes 5 dozen cookies Ingredients: 2 ¼ cups all-purpose flour 1 teaspoon baking soda 1 cup chopped nuts 1 teaspoon salt 1 cup (2 sticks) butter, softened 2 large eggs ¾ cup granulated sugar ¾ cup packed brown sugar 1 teaspoon vanilla extract 2 cups (12-oz. pkg.) Nestle Toll House Semi-Sweet Chocolate Morsels Directions: 1) Preheat oven to 375. 2) Combine flour, baking soda and salt in small bowl and set aside. Beat butter, granulated sugar, brown sugar and vanilla extract in large mixer bowl until creamy. Add eggs, one at a time, beating well after each addition. Gradually beat in flour mixture. Stir in morsels and nuts. Drop by rounded tablespoon onto ungreased baking sheets. 3) Bake for 9 to 11 minutes or until golden brown. Cool on baking sheets for 2 minutes; remove to wire racks to cool completely. Scenario: You and your best friend are throwing a BIG party. You are expecting 120 people to attend and each person to eat three cookies. Using what you know about fractions, modify the recipe so you will bake enough cookies for everyone to eat! Show all of the work that it takes to alter your recipe! How many total cookies will you need to bake? How many dozen will you need to bake? (1 dozen = 12) What will you need to do to the recipe? (ex: multiply or divide by) Flour: Baking Soda: Chopped Nuts: Salt: Butter: Eggs: Granulated Sugar: Brown Sugar: Vanilla Extract: Chocolate Chips:

Scenario: Let s take a trip to the grocery store to buy our ingredients. Estimate how much you ll spend purchasing what you need. No calculators! It is an approximate amount. Ingredient: Flour = $2.54 Nuts = $3.23/2 cup bag Eggs = $1.79/dozen Brown Sugar = $2.98 Chocolate Chips = $3.47/2 cup bag Salt = $2.99 Butter = $2.89/pack of 4 sticks Granulated Sugar = $3.19 Vanilla Extract = $4.49 Baking Soda = $3.79 Estimated Cost Per Ingredient: Your estimated TOTAL COST If you were given a $30.00 allowance, would you be able to afford all of the ingredients?

Recipe Two: Oatmeal Raisin Cookies By: allrecipes.com Servings: Makes 4 dozen cookies Ingredients: ¾ cup butter, softened ¾ cup white sugar 1 cup raisins 2 eggs 1 teaspoon vanilla extract 1 ¼ cups all-purpose flour 1 teaspoon baking soda ¾ teaspoon ground cinnamon ½ teaspoon salt 2 ¾ cups rolled oats ¾ cups packed light brown sugar Directions: 1) Preheat oven to 375. 2) In large bowl, cream together butter, white sugar, and brown sugar until smooth. Beat in the eggs and vanilla until fluffy, set aside. Stir together flour, baking soda, cinnamon, and salt. Gradually beat into butter mixture. Stir in oats and raisins. Drop by teaspoonfuls onto ungreased cookie sheets. 3) Bake for 8 to 10 minutes or until golden brown. Cool slightly, remove from sheet to wire rack. Cool completely. Scenario: You have a recipe for four dozen cookies but only want to make one dozen. Using what you know about fractions, modify the recipe so you will bake only the amount you want to eat. Show all of the work that it takes to alter your recipe! How many total cookies will you need to bake? How many dozen will you need to bake? What will you need to do to the recipe? Flour: Baking Soda: Raisins: Salt: Butter: Eggs: White Sugar: Light Brown Sugar: Vanilla Extract: Ground Cinnamon: Rolled Oats:

Scenario: Suppose you decided that one dozen cookies wasn t enough and wanted to bake three dozen total. Determine what you will need for that recipe (3 dozen cookies). How many total cookies will you need to bake? c How many dozen will you need to bake? What will you need to do to the recipe? Flour: Baking Soda: Raisins: Salt: Butter: Eggs: White Sugar: Light Brown Sugar: Vanilla Extract: Ground Cinnamon: Rolled Oats: Scenario: After baking the three dozen cookies, you realized that you ended up with way too many and wanted to sell the remaining cookies to your neighbors. You ended up only eating nine cookies out of the three dozen that you baked. How many cookies do you have left to sell? c If you were to sell the cookies for $1.50 each, how much money could you make if you sold all of your remaining cookies? NO CALCULATORS! Show your work below. c

Recipe Three: Snickerdoodle Cookies By: allrecipes.com Servings: Makes 4 dozen cookies Ingredients: ½ cup butter, softened ½ cup shortening 1 ½ cups white sugar 2 eggs 2 teaspoons vanilla extract 2 ¾ cups all-purpose flour 2 teaspoons cream of tartar 1 teaspoon baking soda ¼ teaspoon salt 2 tablespoons white sugar 2 teaspoons ground cinnamon Directions: 1) Preheat oven to 400. 2) Cream together butter, shortening, 1 ½ cups white sugar, the eggs and the vanilla. Blend in the flour, cream of tartar, soda, and salt. Shape dough by rounded spoonfuls into balls. 3) Mix the 2 tablespoons sugar and the cinnamon. Roll balls of dough in mixture. Place 2 inches apart on ungreased baking sheets. 4) Bake 8 to 10 minutes, or until set but not too hard. Remove immediately from baking sheets. Scenario: The school bake sale is tomorrow and you need to bake 264 cookies. Using what you know about fractions, modify the recipe so you will bake only the amount you need for the bake sale. Show all of the work that it takes to alter your recipe! How many total cookies will you need to bake? How many dozen will you need to bake? What will you need to do to the recipe? Flour: Baking Soda: Shortening: Salt: Butter: Eggs: White Sugar(Notice it appears twice): Cream of Tartar: Vanilla Extract: Ground Cinnamon:

Scenario: At the end of the bake sale, you made a total of $98.00! You sold the large cookies for $0.50 and the small cookies for $0.25. 1.) If you sold $25.00 in small cookies, how many small cookies did you sell? 2.) How much money did you earn from the large cookies? 3.) How many large cookies did you sell? 4.) How many cookies did you sell all together? 5.) Were there any cookies left over? If so, how many?