Introduction

    The 8^th grade bake sale is coming up, and you want to help your favorite 8^th grader raise money for retreat! You want to make all kinds of baked goods, but you don’t understand all the fractions in the recipes! You must learn how to multiply, add, and convert fractions in order to support the St. Thomas More 8^th graders!

 

When you are through with this webquest, you should be able to answer the following questions:

1)     How would you double a recipe?                                                   

2)     How would you add a ¼ cup of flour and a ½ cup of sugar?

3)     Why is it better to use fractions, rather than decimals, in cooking?

 

Sounds tricky? Don’t worry, you’ll learn how to work with fractions, and these questions will be a piece of cake!

You will be going to the Nestle website, looking at certain recipes, and learning how to add and multiply fractions.

Process

Print out this answer sheet for you r to answer some questions!

1)     I know you’re anxious to bake, but you must learn all about fractions! Go to  http://www.aaaknow.com/fra57ax2.htm and http://www.aaaknow.com/fra66kx2.htm to learn about adding fractions. After you read the lesson, scroll down and play the game at the bottom. Only do 10 problems. What was your score?

2)     Do you get it? Great! Now go to http://www.coolmath4kids.com/fractions/fractions14.html to learn how to multiply fractions. After you read the lesson, scroll down, and click “try some”. Remember to check your answers by rolling your mouse over the rectangle under the questions.

3)     Now you know the basics, you’re ready to bake! Go to http://www.verybestbaking.com/recipes/detail.aspx?ID=18476 and look at the cookie recipe. Answer the following questions (NOT on a calculator!):

 

a)     If you add the amount of flour needed to the amount of brown sugar, how much will you have?

b)     What is the total amount of sugar (granulated and brown combined)?

 

4)     Now, for multiplying fractions, go to http://www.verybestbaking.com/recipes/detail.aspx?ID=30122, and look at the cupcake recipe. If you were to double (double means multiply by 2!) the recipe, how much of each would you have?:

c)      salt

d)     milk

             Tripled?

e) eggs (remember: a whole number is  that number/1!)

f) butter

5)     Now take out a calculator, or go to a calculator program on your computer and check your answers! To turn fractions into decimals, divide the numerator by the denominator. After you double check your answers, look at the answers at the bottom.

Evaluation

Click here to see if you’ve done everything right! If you don’t do everything right, the bake sale will be a disaster!

 

Conclusion

Congratulations! Your class won the pizza party because of your huge contribution to the bake sale! You would’ve never done it without knowing how to add, multiply, and convert fractions! Now the 8^th graders can go on retreat! Good job!