ccss: 6.rp.1 understand the concept of a ratio and use ratio language to describe a ratio...

CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities.

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CCSS: 6.RP.1

Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities.

DO NOW: Current understandingWhat is a ratio?Why do we use ratios?What are some examples of real-

world ratios?What do those ratios mean?

Page 3: CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities

VOCABULARYRATIO: expresses the relationship between two quantities. Ratios compare two measures of the same types of things

Page 4: CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities

Common Ratios

Days per weekmiles per hourpay in dollars per hour weeks vacation per yearhours per daydays per yearheart beats per minutefeet per yard inches per foot

Page 5: CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities

Who Uses Ratios…

Principals use ratios to make sure there are enough teachers for students in the building.

The lottery uses ratios to show how many winners there are compared to tickets bought

Page 6: CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities

Ratios in our classroomWhat is the ratio of boys to girls

in our class?

What is the ratio of girls to boys in our class?

What is the ratio of teacher to students in our class?

Page 7: CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities

Your turn:

Come up with 3 more ratios you see from our class and explain what they mean

Page 8: CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities

Ratio Relationships

Part to Part: student to student

Part to Whole: student to class

Whole to part: class to student

Page 9: CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities

Ratio Relationships

A basket of fruit contains 6 apples, 4 bananas, and 3 oranges. What is their relationship

1) Bananas to Apples

2) Bananas and Apples to Oranges

3) Oranges to Total Pieces of Fruit

Page 10: CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities

Ratio Relationships

Find the ratio

Model the ratio

Write the ratio

What does it mean

Model it another way

3 drums for 18 people

4 blue eyed people to 6 brown eyed people

5 boys out of 10 girls

For every 6 guppies in the tank there are 3 that are orange

Page 11: CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities

Video

http://www.learnalberta.ca/content/mesg/html/math6web/index.html?page=lessons&lesson=m6lessonshell03.swf

Page 12: CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities

Back to the chart

1. Can anything be removed?

2. Can anything be added?

3. Can anything be revised?

Page 13: CCSS: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities

In closing

Research shows that1 out of 10 people are left-handed.

Explain in words what this means and what does this tell us about the people who are right-handed.

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