Algebra Readiness Made Easy Grade 4

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DOG DATA

• How old is Ms. Clean? (2 x6, or 12 years old)


• How old is Popeye? (12 + 3, or 15 years old)

Work together as a class to answer the questions

in “Solve the Problem: Dog Data.”

Math Chat With the Transparency

Display the “Make the Case: Dog Data” trans-

parency on the overhead. Before students can

decide which character is “sharp as a tack,” they

need to figure out the answer to the problem.

Encourage students to work in pairs to solve the

problem. Then bring the class together for

another whole-class discussion. Ask:

• Who has the right answer? (Marlee Marlin)


• How did Marlee Marlin begin to solve the

problem? (She started with Fact C—Windy Day is

4 years old.)

• What did Marlee Marlin do next? (She used Fact

B—Madam Peppy is 2 years older than Windy Day.

Madam Peppy is 4 + 2, or 6 years old.)

• What did Marlee Marlin do to find Dandy’s

age? (She used Fact A and found that Dandy’s age is

twice Madam Peppy’s age. So Dandy is 2 x6, or 12

years old.)

• How do you think Wally Walrus got his answer?

(He probably used the numbers in Facts B and C for

Madam Peppy and Windy Day’s ages and added

those two numbers to get Dandy’s age.)

• How do you think Ralph Rhino got his answer?

(He probably found Windy Day’s and Madam

Peppy’s ages the same way that Marlee Marlin did.

But then he found Dandy’s age by doubling Windy

Day’s age instead of doubling Madam Peppy’s age.)

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Name _____ Date __

DOG DATA

11

I’ll start with the fact that

gives one dog’s age.

11 ..Which fact did Ima use first? __

22 ..How old is Ms. Clean? __

33 ..How old is Popeye? __

44 ..How did you figure out Popeye’s age? _____

---

SSOOLLVVEE

TTHHEE

PPRROOBBLLEEMM How old are the dogs?

Use the facts to figure out each dog’s age.

FFAACCTTSS::

AA

Popeye is 3 years older than Ms. Clean.

BBMs. Clean is twice as old as Holly Wood.

CCHolly Wood is 6 years old.

Ima Thinker

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PPooppeeyyee

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HHoollllyy WWoooodd

Dandy

DOG DATA

Name _____ Date __

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MAKE

THE

CASE How old are the dogs?

Use the facts to figure out each dog’s age.

FACTS:

ADandy’s age is twice Madam Peppy’s age.

BMadam Peppy is 2 years older than Windy Day.

CWindy Day is 4 years old.

Wally Walrus Ralph Rhino

Marlee Marlin

I’m sure that

Dandy is

8 years old,

Madam Peppy is

6 years old, and

Windy Day is

4 years old.

Without a doubt,

Dandy is 12 years

old, Madam Peppy

is 6 years old, and

Windy Day is 4

years old.

Clearly, Dandy is 6

years old, Madam

Peppy is 2 years

old, and Windy Day

is 4 years old.

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Who is sharp as a tack?

Windy Day

Madam Peppy

Algebra Readiness Made Easy: Grade 4 © Greenes, Findell & Cavanagh, Scholastic Teaching Resources