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Chapter 2 Fractions. Day…. Multiplying and dividing f ractions by w hole numbers, m ixed numbers and fractions. Using models to solve p roblems involving the multiplication and division of fractions Solving real w orld p roblems involving the multiplication and division of fractions - PowerPoint PPT Presentation
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Chapter 2Fractions
Day…..1. Multiplying and dividing fractions by w
hole numbers, mixed numbers and fractions.
2. Using models to solve p
roblems involving the multiplication and division of fractions
3. Solving real world p
roblems involving the multiplication and division of fractions
4. Exploring Fractions
5. Review
Day 1
Bell WorkMary's dad says that he will give her an allowance of $2 the first month,
$4 the second month, $8 the third month, and so on. Mary knows that
her dad is using a base of 2. Mary doesn't think that this is a good deal.
She thinks $50 a month is a better deal. How much will she make in a
year if she does it her way.
Show your work.
d) How much will Mary make in a year if she does what her dad wants? Show your work.
c) Which deal is better, Mary's or her Dad's? By how much?
b) How much will Mary make the twelfth month using her dad's idea? How did you find this number?
I Can….Multiply and Divide
Fractions.
Vocabulary• Fraction- a number that represents part of a whole or part of
a set• Greatest Common Factor- the greatest of the common factors
of two or more numbers• Improper Fraction- a fraction with a numerator that is greater
than or equal to the denominator• Mixed Number- a number that has a whole number part and
a fraction part• Reciprocal – two numbers with a product of 1• Simplest Form- a fraction in which the GCF of the numerator
and denominator is 1
Multiplying Fractions
Essential Understanding: • To multiply a fraction by a fraction, you simply multiply
the numerators, then the denominators. • To multiply a fraction by a whole number or a mixed
number, you must first change the number to an improper fraction. Then, multiply the numerators and the denominators.
Write each product in simplest form.
• Quick Check: Complete problems 1-6 on page 104
Dividing Fractions
Essential Understanding: • To divide a fraction by a fraction, simply flip the
second fraction and multiply. • To divide a fraction by a whole number or a mixed
number, change the number to an improper fraction. Then, flip the second fraction and multiply.
• Quick Check: Complete problems on page
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 2
Bell Work
Nathan is baking cookies and the recipe calls for 3 cups of water. He needs to make 1 whole batch and only of another batch, for a total of 1 batches. How much water will Nathan need to bake the cookies?
Draw a diagram to show how much water will be needed.
I Can….• Create story context for equations
involving the multiplication and division of fractions
~And~• Use a visual fraction model to show
my work.
VocabularyNo New Vocabulary
• Fraction- a number that represents part of a whole or part of a set• Greatest Common Factor- the greatest of the common factors of
two or more numbers• Improper Fraction- a fraction with a numerator that is greater
than or equal to the denominator• Mixed Number- a number that has a whole number part and a
fraction part• Reciprocal – two numbers with a product of 1• Simplest Form- a fraction in which the GCF of the numerator and
denominator is 1
Watch This• http://learnzillion.com/lessons/212-multiply-fr
actions-by-whole-numbers-using-bar-models• http://
learnzillion.com/lessons/199-divide-whole-numbers-by-unit-fractions-using-visual-models
• http://learnzillion.com/lessons/1383-solve-word-problems-involving-division-of-mixed-numbers-and-fractions-using-picture-models
Explore Group Work Activity
• You will be given a recipe. • Your job is to create , model, and solve 2 story problems
using your recipe. (1 multiplication and 1 division)• Be sure you check your work with a calculator!!!• We will use these problems in class tomorrow, be ready
to share.
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 3
Bell Work1) Hakeem’s front porch measures 9 3/4 feet by 4 feet.
Estimate the area of his front porch.
Justify your answer.(Hint: Area = Length x Width)
2) Leslie spread organic fertilizer on 4/5 of her flower pots to test
how much they would grow. If she has 25 flower pots, how many
did she spread fertilizer on?
Justify your answer.
I Can….Can look at my answer to
check that I answered what was asked and see if my answer makes sense
VocabularyNo New Vocabulary
• Fraction- a number that represents part of a whole or part of a set• Greatest Common Factor- the greatest of the common factors of
two or more numbers• Improper Fraction- a fraction with a numerator that is greater
than or equal to the denominator• Mixed Number- a number that has a whole number part and a
fraction part• Reciprocal – two numbers with a product of 1• Simplest Form- a fraction in which the GCF of the numerator and
denominator is 1
Watch This• http://
learnzillion.com/lessons/1323-solve-division-of-fractions-problems-using-reciprocals
Presentation of Story Context
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 4
Bell Work
Create a story problem for
6 ÷ ¼ =
Illustrate the solution
VocabularyNo New Vocabulary
• Fraction- a number that represents part of a whole or part of a set• Greatest Common Factor- the greatest of the common factors of
two or more numbers• Improper Fraction- a fraction with a numerator that is greater
than or equal to the denominator• Mixed Number- a number that has a whole number part and a
fraction part• Reciprocal – two numbers with a product of 1• Simplest Form- a fraction in which the GCF of the numerator and
denominator is 1
I Can….solve problems involving the addition, subtraction,
multiplication, and division of mixed
numbers
Explore
Lab Rotations
1-8
You will have 15 minutes to complete 4 stations.
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 5
Bell Work
Sandy wants to split one-half of a pan of
brownies between herself and three
friends. How much of the pan of brownies
will each person get?
I Can….Fluently multiply and
divide fractions.
VocabularyNo New Vocabulary
• Fraction- a number that represents part of a whole or part of a set• Greatest Common Factor- the greatest of the common factors of
two or more numbers• Improper Fraction- a fraction with a numerator that is greater
than or equal to the denominator• Mixed Number- a number that has a whole number part and a
fraction part• Reciprocal – two numbers with a product of 1• Simplest Form- a fraction in which the GCF of the numerator and
denominator is 1
Let’s Review
PleaseTake out your
Study Guide
Wrap it Up
• Review
• Questions
• Quiz
Converting Numbers• Fractions to Decimals to Percent