Company is Coming

SCORE Mathematics

Standards Connections

Company is Coming

Introduction: Grandma is coming for a visit tomorrow, and her doctor has put her on a fat free diet. You really love your grandma and would like to do something very nice for her. You have found a fat free recipe for pancakes, which serves eight. Since Grandma can't eat eight pancakes, you'll need to find 1/2 of the recipe. Mom found out about your neat idea and wanted to taste your creation, so now you need to find 3/4 of the recipe.

Prior Knowledge: The learners should be introduced to multiplying fractions.

Grade Level: 5-7

Task: The end result should be that the learners will be able to multiply fractions easily.

Resources: The students will need access to the Web site listed, paper, and pencil.

Pancake Recipe
<http://www.freerecipe.org/Breakfast/Pancakes/>

Process:

Find the recipe off of the Web site.
Copy the recipe.
Multiply 1/2 times each ingredient.
Multiply 3/4 times each ingredient.

Learning Advice: When using this lesson, try to choose a recipe which uses ingredients that can easily be divided. Eggs would be difficult to use.

Evaluation: The students would be evaluated individually, by producing the correct calculations for the lesson.

Extensions: Converting teaspoons to tablespoons and tablespoons to cups.

Conclusion: The students will feel comfortable in multiplying fractions.

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California Mathematics Academic Standards:

Grade 5:
Number Sense
2. Students perform calculations and solve problems involving addition, subtraction and simple multiplication and division of fractions and decimals.
2.4 understand the concept of multiplication and division of fractions

Grade 6:
Number Sense
2. Students calculate and solve problems involving addition, subtraction, multiplication and division of rational numbers.

2.2 explain the meaning of multiplication and division of fractions and perform the calculations (e.g., 5/8 divided by 15/16 = 5/8 x 16/15 = 2/3)

Grade 7:
Number Sense
1. Students know the properties of and compute with rational numbers expressed in a variety of forms.

1.2 add, subtract, multiply and divide rational numbers, integers, fractions and decimals and take rational numbers to whole number powers

NCTM 5-8:

STANDARD 4: MATHEMATICAL CONNECTIONS
STANDARD 5: NUMBER AND NUMBER RELATIONSHIPS
STANDARD 6: NUMBER SYSTEMS AND NUMBER THEORY
STANDARD 7: COMPUTATION AND ESTIMATION
STANDARD 8: PATTERNS AND FUNCTIONS