Math Concept Reader MCR g6 music to our ears

Math Concept Reader

Music to Our Ears

Math Concept Reader

DIGITAL FINAL PROOF

Expedition: Antarctica

by Aenea Mickelsen

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Printed in the United States of America

ISBN 13: 978-0-15-360206-1

ISBN 10: 0-15-360206-6

1 2 3 4 5 6 7 8 9 10 175 16 15 14 13 12 11 10 09 08 07

Math Concept Reader

Music to Our Earsby Aenea Mickelsen

DIGITAL FINAL PROOF

The 42 members of the Rodale Middle School band meet every day at

1:15 P.M Today, their teacher, Mr Folks, says that he has exciting news He

has just received an e-mail The e-mail notified him that the band has been

selected to play in the statewide marching band championship The students

applaud with excitement

The band members know this invitation is quite an honor Mr Folks

reminds the students that there is still a significant amount of work to do

They will need to practice nearly every afternoon The band members also

must raise money for the trip

“The money will pay for the bus transportation and lodging for all of us

for several days,” Mr Folks says “We need to raise $5,250 The competition

is just two months away.” This seems like a great deal of money to the

students They immediately begin discussions about how they might meet

their goal

CHAPTER 1: The Challenge

Mr Folks divides the group into seven committees and then writes an equation on the board

$5,250 ÷ 7 = $750 Each committee will raise $750 toward the trip, and the committees will decide how they will earn, or raise, their share of the cost The band

members gather into committee groups and begin to talk to each other

Voncille asks how soon they need to have all the money raised Mr

Folks explains that the school district will cover the costs up front, but that

all of the funds must be raised and repaid to the district by the week of the

competition “We better get to work, then,” Voncille says

The students begin to brainstorm fundraising ideas Luis says he has been thinking about starting a dog-walking service Jeffrey and Miguel share their

pet photography idea Mr Folks tells the students that these ideas are a great

start, and the boys decide they should work together

3

Mr Folks writes an equation on the board The band needs $5,250 to

go to the state championship.

DIGITAL FINAL PROOF

Each year Cassidy’s neighborhood has a large, multi-family yard sale

Families participate during the same days and times All of the families

make some money from the sale and get rid of things they no longer want

Cassidy suggests an all-band yard sale where each member of the band

would contribute items

Molly has an idea for how to raise money She loves to bake and she

knows others who do, too She will organize a bake sale for the same day as

the yard sale People can shop for bargains and enjoy tasty, homemade treats

at the same time

Tyrese and Cory suggest having a car wash to kick-off the band’s efforts

“We can let people know that the car wash is just the first of many great

fundraising events,” says Tyrese

Rodale Middle School band members wash cars to raise money for their trip.

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The next day the car wash committee meets to plan their event They

design a flyer for the car wash They decide what amount they will ask

people to donate The suggested donation will be $5.00 for cars and $7.00

for trucks and SUVs When they finish the flyer, they make copies to pass

out to people in the neighborhood

On the day of the car wash, the band members arrive with supplies

Friends and neighbors bring their cars and trucks to get washed After the

students wash and dry the last vehicle, Cory reports that they washed 30 cars

and 22 SUVs and trucks

c is the amount of money earned washing cars.

c = 30 × $5.00

c = $150.00

s is the amount of money earned washing SUVs and trucks.

s = 22 × $7.00

s = $154.00

$150.00 + $154.00 = $304.00

The students raised $304.00 from the car wash That’s a super start for

the band’s fundraising

CHAPTER 2: The Jobs

Since Luis, Jeffrey, and Miguel love dogs, their committee will offer pet services Luis organizes a dog-walking service while Jeffrey and Miguel plan

to photograph pets for their owners

Luis decides the dog walkers will charge $3.00 per half-hour per dog

He asks his neighbor, Manuela, if she would pay for the walking service

Manuela has two dogs, but since she works long hours it is hard to find time

to exercise her dogs She is delighted to have Luis’ help She hires Luis to

walk her dogs five days a week

2 × $3.00 = $6.00 Luis will earn $6.00 per day

5 × $6.00 = $30.00

He will earn $30.00 per week

$30.00 × 8 = $240.00

In eight weeks, Luis will earn $240.00 walking dogs

7

Luis and Paul walk neighbors’ dogs to raise money for their committee.

DIGITAL FINAL PROOF

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The gift-wrapping committee wraps holiday presents to raise money.

Brianna and Victor form a gift-wrapping committee The holidays are just around the corner so they will offer their services as gift wrappers and

charge $0.50 for each package they wrap

Brianna’s mom needs some help so she hires them to wrap gifts that she needs to mail soon They gather wrapping paper, colorful ribbon, and rolls

of tape As they finish one package, they write $0.50 on a sheet of paper

Together, they wrap 12 packages Brianna writes an equation to figure out

how much they have earned

a is the amount earned from wrapping 12 packages.

a = 12 × $0.50

a = $6.00

They earned $6.00 wrapping Brianna’s mom’s gifts

Victor subtracts $6.00 from $750.00 to see how much more they need

to earn

$750.00 – $6.00 = $744.00

To earn $744.00, they will have to wrap a lot of packages! They decide

to offer their services at the yard sale so they can wrap peoples’ purchases

there

9

DIGITAL FINAL PROOF

Recently, Dylan and Carl helped Dylan’s mom clean out their garage

They took the toys, sports equipment, and old clothes off the shelves They

reorganized shelves, packed items for donations, and threw away items that

were no longer usable Dylan’s mom suggested that they could help others

do the same thing

They make a flyer to advertise their services They will charge $15.00 an

hour to help people clean their garages and to help with other chores

Within a few weeks, they helped five families with different chores One

weekend they worked for a total of 8.75 hours The next three weekends,

they worked a total of 20.5 hours

8.75 + 20.5 = 29.25

They worked 29.25 hours in all To find out how much money they

made, they write an equation

c is the amount of money they earned.

c = $15.00 × 29.25

c = $438.75

Dylan and Carl earned $438.75

Dylan and Carl do chores for their neighbors.

Zachary, Alexis, and Emily are all very experienced child sitters The three friends know that many of the families they work for have activities

planned at this time of the year They ask their customers if they would like

to have childcare at their holiday gatherings

Zachary, Alexis, and Emily will provide childcare during events They will charge $5.00 per hour, per child For families with more than one child,

they will charge 75% of that amount for each additional child

b is the cost per hour for childcare for a family with more than one

child

b = 75% × $5.00

b = 0.75 × $5.00

b = $3.75

Families with more than one child will pay $5.00 per hour for the first child and $3.75 per hour for each additional child

The families think the students’ idea is fabulous and they hire them to take care of their children

11

Alexis babysits to make money for the band.

DIGITAL FINAL PROOF

Mr Folks made a chart when the band’s fundraising efforts began He

uses it to keep track of the committees’ progress The class looks at the chart

to see how close they are to their goal

The car wash group has raised $304.00 so far The pet walkers have earned

nearly $350.00 The group that cleaned garages and did other chores has earned

$438.75 and $292.50 Last week, the childcare group had 16 children at an event

They charged $5.00 an hour for 10 of those children

s is the amount earned for childcare at $5.00 an hour.

s = 10 × $5.00

s = $50.00

They charged $3.75 an hour for 6 of those children

e is the amount earned for childcare at $3.75 an hour.

e = 6 × $3.75

e = $22.50

Each hour they made $50.00 and $22.50

$50.00 + $22.50 = $72.50 each hour

They worked for 4 hours

f is the total amount earned for childcare for 4 hours.

f = 4 × $72.50

f = $290.00 earned that night.

CHAPTER 3: Adding Things Up

The yard sale is today People donated many items for the sale, including baby clothes, bicycles, and even some used furniture Cassidy helps to tag and display the items

Molly sets up two bake-sale tables On the brownie and cookie table, she arranges people’s homemade items and the 60 cookies and 45 brownies that she and her mom made last night Molly figures that there are 264 treats on the table!

At $0.25 each, Molly wonders how much they will make if they sell all the cookies and brownies

b is the amount earned

b = 264 × $0.25

b = $66.00 for selling all the treats.

On the other table, Molly displays Autumn’s father’s two apple pies and other families’ donated pies There are 12 pies in all Molly decides to charge

$7.00 each for pies She calculates how much they will get if they sell all the pies

p is the amount earned for selling all the pies.

p = 12 × $7.00

p = $84.00 for selling all the pies.

Molly wonders how much they will make if they sell all of the baked goods

$84.00 + $66.00 = $150.00 for all the baked goods

13

CHAPTER 3: Adding Things Up Molly and her

mom bake treats for the yard sale.

DIGITAL FINAL PROOF

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-R KEEPS TRACK HOW MONEY COMMITTEES RAISE ALMOST ENOUGH MONEY PAY BAND

Mr Folks updates the earnings from the other groups Then he writes a calculation on the board

$5,250 - $4,340 = $910 There are still a few more weeks before the trip to the competition

The band needs to raise another $910 The students are confident that

they will raise the rest of the money They enjoy working together and are

proud of their work so far Members of committees that already raised at

least $750 decide to regroup with some of the committees that still need to

raise money “If we all pitch in, we’ll earn the rest of the money in no time,”

Roman says

This afternoon, though, it is time to stop thinking about fundraising and

to start practicing music Mr Folks and the band want to play their best at

the championship!

15

The Rodale school band practices for the competition They will play

a medley of movie themes.

DIGITAL FINAL PROOF

Photo Credits: cover, title page: © Tim Pannell/Corbis; p 3: © SuperStock, Inc / SuperStock; pp 4,

11: © Tony Freeman/PhotoEdit Inc.; p 7: Don Smetzer/Stone/Getty Images; p 8: GK Hart/Vikki

Hart/Photodisc Green/Getty Images; p 9: Photos.com; p 10: © Michael Newman/PhotoEdit Inc.;

p 13: © Wil & Deni McIntyre/Corbis; p 15: © Myrleen Ferguson Cate/PhotoEdit Inc.

equation a statement that shows that two quantities are equal

flyer a piece of paper advertising an event or other activity

fundraising raising money for a good cause in an organized

way

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