Chapter 3Ratios and
Rates
Day…..
1. Introducing Rates
2. Unit Rates
3. Graphing Rates of Change
4. Rates and Ratios in Review
5. Pop Quiz
Day 1
Bell Work
Walt can mow 500ft2 in10 minutes. If he
does not slow down, how long will it take
him to mow his parents lawn that measures
3,500ft2?
Justify your Response
Vocabulary• Rate –
(Example: 4 tires: 1 car)• Unit Rate –
(Example: )• – A comparison of two quantities by division.
(Example: a:b, a to b, ) • – ratios the express the same relationship between two
quantities. (Example: 10:15 is equivalent to 2:3 and 20:30)• – to multiply or divide two related quantities by the same number.
(Example: x )• – a table with columns filled with pairs of numbers that have
the same ratio.
Example: Nails Used 5 10 15Shelves Hung 1 2 3
A ratio comparing two quantities with different kinds of units.
a rate that is simplified so that it has a denominator of one.
Ratio
Equivalent Ratio
Scaling
Ratio Table
I Can….
Explore rates using models.
Introducing RatesEssential Understanding: • A rate is a ratio that compares two quantities with
different kinds of units. For example: 120 miles in two hours.
• Because rates compare quantities with different units, the units must be included when writing or solving rates.
• Just like before we must be careful to write the units in the order they are given.
• Because rates are ratios, they can be written in all three forms; colon 120 miles: 2 hours, 120 miles in two hours, and .
Watch This• http://
learnzillion.com/lessons/839-understand-rates-as-a-type-of-ratio
(6 minutes)• http://
learnzillion.com/lessons/614-solve-rate-problems-using-multiplicative-reasoning
(7 minutes)
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 2
Bell Work
Mark works in a factory where he is paid buy the piece to put together roof vents. He clocked himself one day and found he could
make one roof vent in 20 minutes. If he works an 8 hour shift, how many roofs vents
can he make in one day?
Homework Check
Vocabulary• –
(Example: 4 tires: 1 car)• –
(Example: )• – A comparison of two quantities by division.
(Example: a:b, a to b, ) • – ratios the express the same relationship between two
quantities. (Example: 10:15 is equivalent to 2:3 and 20:30)• – to multiply or divide two related quantities by the same number.
(Example: x )• – a table with columns filled with pairs of numbers that have
the same ratio.
Example: Nails Used 5 10 15Shelves Hung 1 2 3
A ratio comparing two quantities with different kinds of units.
a rate that is simplified so that it has a denominator of one.
Ratio
Equivalent Ratio
Scaling
Ratio Table
No NewVocabulary
Rate
Unit Rate
I Can….Determine unit rates
AndSolve unit rate problems including those involving unit pricing and constant
speed.
Unit RatesEssential Understanding:
• A unit rate is a rate that has been simplified to a
denominator of 1.
• Remember a rate is a ratio and it must be scaled down
by division.
• To determine a unit rate, you simply divide the
numerator by the denominator and place the quotient
over a denominator of 1.
Watch This
• http://learnzillion.com/lessons/840-create-unit-rate-using-diagram
(5 Minutes)• http://
learnzillion.com/lessons/841-create-unit-rate-using-tape-diagram
(5 minutes)
Practice
Please take out your maker boards
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 3
Bell Work1. Mr. Vanderson drove 110 miles in 2 hours. How
fast did Mr. Vanderson drive?
2. Nikki can bounce a basket ball 900 times in 20
minutes. How may times can Nikki bounce a
basketball in one minute.
3. Dakota walked 12 blocks to his uncle’s house in
30 minutes. How many minutes did it take
Dakota to walk 1 block?
Homework Check
Vocabulary• –
(Example: 4 tires: 1 car)• –
(Example: )• – A comparison of two quantities by division.
(Example: a:b, a to b, ) • – ratios the express the same relationship between two
quantities. (Example: 10:15 is equivalent to 2:3 and 20:30)• – to multiply or divide two related quantities by the same number.
(Example: x )• – a table with columns filled with pairs of numbers that have
the same ratio.
Example: Nails Used 5 10 15Shelves Hung 1 2 3
A ratio comparing two quantities with different kinds of units.
a rate that is simplified so that it has a denominator of one.
Ratio
Equivalent Ratio
Scaling
Ratio Table
No NewVocabulary
Rate
Unit Rate
I Can….
Plot a rate of change on a graph.
Rate of ChangeEssential Understanding:• A graph can be used to illustrate a rate of
change, such as changes over time and distance.
Please open your book to page 162
Watch This• http://
learnzillion.com/lessons/615-graphing-rate-problems-using-a-table
(7 minutes)
Your Turn….
• Clear your desk of everything but a pencil and a calculator.
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 4
Bell WorkA store sold 255 DVDs in 5 days. If sales continue
at this rate, how many DVDs can the expect to
sell in 30 days?
Graph the rate of change for each day on the
given graph card.
Homework Check
Vocabulary• –
(Example: 4 tires: 1 car)• –
(Example: )• – A comparison of two quantities by division.
(Example: a:b, a to b, ) • – ratios the express the same relationship between two
quantities. (Example: 10:15 is equivalent to 2:3 and 20:30)• – to multiply or divide two related quantities by the same number.
(Example: x )• – a table with columns filled with pairs of numbers that have
the same ratio.
Example: Nails Used 5 10 15Shelves Hung 1 2 3
A ratio comparing two quantities with different kinds of units.
a rate that is simplified so that it has a denominator of one.
Ratio
Equivalent Ratio
Scaling
Ratio Table
No NewVocabulary
Rate
Unit Rate
I Can….
Use ratio and rate reasoning to solve
real-world and mathematical
problems
Station Rotations
1. Write your exit ticket.
2. Pack up everything but a pencil.
3. You will have 15 minutes to complete each rotation
1st Rotation
2nd Rotation
3rd Rotation
4th Rotation
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 5
Bell Work1. A 5lb sack of potatoes cost $4.32. An 8lb sack of
potatoes cost $6.78. Which is the better deal?
2. Jessie says she will charge Jim $45.00 for 3 hours of
tutoring. Mark says he will charge Jim $90.00 for 5
hours of tutoring. Who offers Jim the better hourly
rate of pay?
Homework Check
Vocabulary• –
(Example: 4 tires: 1 car)• –
(Example: )• – A comparison of two quantities by division.
(Example: a:b, a to b, ) • – ratios the express the same relationship between two
quantities. (Example: 10:15 is equivalent to 2:3 and 20:30)• – to multiply or divide two related quantities by the same number.
(Example: x )• – a table with columns filled with pairs of numbers that have
the same ratio.
Example: Nails Used 5 10 15Shelves Hung 1 2 3
A ratio comparing two quantities with different kinds of units.
a rate that is simplified so that it has a denominator of one.
Ratio
Equivalent Ratio
Scaling
Ratio Table
No NewVocabulary
Rate
Unit Rate
I Can….
• Relate ratios and rates to the
multiplication and division of fractions.
• Look at my answer to check that I answered what was asked and see if
my answer makes sense.
Let’s Review
PleaseTake out your Study Guide
pOp Quiz
• Take out a pencil and a calculator
• Clear everything else from your desk
Wrap it Up
• Classroom Store
• Exit Tickets
Computer Station• http://
learnzillion.com/lessons/842-define-unit-rate-using-double-number-line
• http://learnzillion.com/lessons/613-solve-rate-problems-using-double-number-lines
• http://learnzillion.com/lessons/612-solve-for-missing-values-in-rate-problems-using-a-table
(6 minutes per video)