Emergency Procedures Evacuation Line# 32 Lock down Earthquake

Emergency ProceduresEvacuationLine#

32Lock downEarthquake

September , 2015

At your desk:1. Math Journal2. Planner3. Homework

By the end of class today:

-You will be able to add or subtract fractions with like and unlike

denominators.

Life lessons: Be Present- Minded Be Committed to Excellence Be a Positive Force Take Action!

Homework CheckONE team member, retrieve answer key and green team bucket.

1. As a team, check homework answers.2. Make changes to homework as needed and LEARN

how to find the correct answer by TALKING to your TEAM!

**** REMEMBER everyone makes mistakes! ********That is HOW we LEARN! ****

3. Read the Homework Rubric. 4. List everyone’s Name on the Homework sheet, and shade in your correct color. 5. Write any unanswered questions on the back of the rubric. 6.Turn In your TEAM’s rubric and return materials

Complete Warm-Up in journal

1. Convert to an improper fraction.

2. Convert to a mixed number.

3. Write in simplest form.

4. Write a fraction that is equivalent to .

534

4

25

18

4

7

3

235

146

29

, , ,6 9 12

...19 21 28

MISTAKE!!!!!

Lesson:

Add or subtract fractions with like and unlike denominators.

Follow along on page

Title the top of your journal page

VocabularyLeast Common MultipleThe smallest non-zero multiple that is common to two or more numbers.

Least Common DenominatorThe least common multiple of two denominators.

Example 1a. Find the least common multiple of 8 and 12:

One method for finding the least common multiple is to list out the multiples of each number until the same number appears on each list.

Multiples of 8: 8, 16, 24, 32, 40, …

Multiples of 12: 12, 24, 36, 48, …

The LCM is 24.

Example 1 Continued…b. Find the least common multiple of 4 and 5:

Another method to find the LCM is to choose the largest number, in this case 5, and look at its multiples.

Multiples of 5: 5, 10, 15, 20, 25, 30, 35, …

Find the smallest multiple that 4 divides into evenly.

5 – NO10 – NO15 – NO20 – YES (20 4 = 5)

The LCM is 20.

Adding and Subtracting Fractions

1. If denominators are not equal, rewrite the fractions as equivalent fractions with common denominators using the least common denominator.

2. Add or subtract the numerators.

3. Write the sum or difference over the common denominator.

4. Write the fraction in simplest form.

Example 2Find the value of .

These fractions already havea common denominator.

Add the numerators.

Write in simplest form.

1 7

10 10

1 7 1 7 810 10 10 10

1 7 810 10

Example 3On Monday, the New Orleans International Airport reported inch of rain. On Tuesday it rained inch. What was the total rainfall for these two days?

The least common multiple of8 and 16 is 16. Write as anequivalent fraction with adenominator of 16.

Write the sum over the LCD.

Change from an improper factionto a mixed number.

It rained a total of inches in New Orleans on Monday and Tuesday.

116

6 11 171

16 16 16

1161

38

1116

38

Example 4Find the value of .

The least common multiple of3 and 4 is 12. Write each fractionas equivalent fractions with adenominator of 12.

Write the difference over the LCD.

2 13 4

12

5

12

3

12

8

Explore!

Fraction CareersIn each step you will perform a calculation that might be done in a certain career. Determine the solution to each step and then guess in what career you might do that specific calculation.

Step 1 Kara mixed gallon of red paint with gallon of blue paint to create a deep indigo paint. How much total indigo paint did Kara create? Name a possible career that Kara may have.

5

210

7

Step 2 Jillian made 36 pastries for a Mother’s Day brunch. Before making the pastries, she had cup butter. After making the pastries, only cup of butter remained. How much butter was used for the pastries?

8

716

1

Step 3 Rick nailed two boards together. One board was inch thick. The other board was inch thick. What is the total thickness of the two boards nailed together? What is a possible career Rick might have?

8

3

2

1

gallons

cups

inch

Explore!

Fraction Careers

Step 6 Name another career that uses fractions. Make up a story problem that would involve adding or subtracting fractions in that career. Find the answer to your problem.

Step 4 Hans helped a family get a home loan for their first house. He told the family there was a % fee for the title company and another % fee for the listing agent. What was the total percentage of fees the family will have to pay? What do you think Hans does for a living?

4

1

4

3

Step 5 Jocelyn had liter of a cleaning solution in a container. She used liter of the solution on a stain in the carpet. How many liters of solution remain in the container? What do you think Jocelyn’s career is?

20

19

10

1

1%

liter

PracticeProblems 17-23

On page 14

****Remember:

The math process takes time

You will be able to fluently add and subtract fractions

Communication Prompt(Copy and reply in journals)

What do you find to be the most difficult part

about adding or subtracting fractions?

Exit Problems(Copy and reply in journals)

Write each answer in simplest form.

1.

2.

3.

4.

4 1

5 10

1 32 8

2 33 4

19 1

20 5

910

18

512

1

34

Homework:

1.3 worksheet Odd numbers

****Remember:

The math process takes time

You will be able to fluently write mixed numbers and improper fractions

Before you go..

FacilitatorDoes your team ‘look’ ready to go? Resource Manager

Team Captain

Recorder/Reporter

Are all the supplies stocked up?Does your team

‘Sound’ ready to go? Did everyone

‘record’ their homework?