Area and Perimeter

LO: SWBAT solve problems related to
perimeter and area of rectangles using concrete and pictorial models.

DOL: Given a set of problems, students will
correctly solve problems related to perimeter and area of rectangles using concrete and pictorial models on at least 4 out of 5 questions.

MATH.4.5(D) Solve problems related to perimeter and area of rectangles where the dimensions are whole numbers.

14

Academic Vocabulary

Length

Width

Length

Width

Length

Width

15

Academic Vocabulary

Area

Square Unit

3 columns

2 rows

3 in.

2 in.

1 unit

1 unit

1 unit

1 unit

16

12 cm

Find the area using the formula.

A = s x s
A =
A =

17

12 in.

Find the perimeter using the addition formula.

7 in.

P= L + W + L + W
P=
P=
P=

18

3 ft

12 ft

Find the perimeter using the multiplication formula.

Find the area using the formula.

P = (L x 2) + (W x 2)
P =
P =
P =

A = L x W
A =
A =

Today, you will solve problems
related to the perimeter and area of rectangles using concrete or pictorial models.

Inspiration Partnership Team Vector by Vecteezy.com

Let’s check using the multiplication formula.

P = 2 x ___ + 2 X _____

P = _____ + _____

P = _____ units

Use colored tiles to fill the rectangle.

Work with a partner and determine the number of rows and columns.

7 units

2

units

Now, solve for the perimeter.

What is the length and width of the rectangle?

The perimeter is _____ units.

Dropdown

The perimeter of the rectangle with a length of 7 units and a width of 2 units is ​

Select answer

units.

Let’s check.

A = _____ X _____

A = _____ square units

7 units

2

units

Now, solve for the area.

The area is _____ square units.

14

Dropdown

The area of the rectangle with a length of 7 units and a width of 2 units is ​

Select answer

units.

Interactive Journal


Complete Charts

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Math Response

A square has a length and width of 14 units. What is the perimeter?

Type answer here

Correct Answer: 56

Deg^°

Rad

Math Response

A square has a length and width of 14 units. What is the area?

Type answer here

Correct Answer: 196

Deg^°

Rad

Multiple Choice

A rectangle wood piece with the length and width given is shown.

What is the perimeter and area of the rectangle wood piece?

• P = 19 in. and A = 60 square in.

• P = 60 in. and A = 38 square in.

• P = 38 in. and A = 60 square in.

• P = 34 in. and A = 40 square in.

Fill in the Blanks

Math Response

A rectangle with the length and width given is shown.

What is the area of the rectangle in square feet?
Record your answer in the space provided.

Type answer here

Correct Answer: 76

Deg^°

Rad

Multiple Choice

A square trail with the given length is shown.

What is the perimeter and area of the square trail?

• P = 36 mi and A = 24 square mi

• P = 24 mi and A = 36 square mi

• P = 12 mi and 24 square mi

• P = 22 mi and 12 square mi

Fill in the Blanks

Open Ended

How can models be used to determine the formula for perimeter and area?

Models can help me determine area and perimeter by...

35

DOL: Given a set
of problems,
students will
correctly solve
problems related
to perimeter and
area of rectangles
using concrete and
pictorial models on
at least 4 out of 5
questions.

Demonstration of Learning