L52_Area of Rectangles

Today's Lesson: Unit 13 Area of Rectangles

4TH GRADE MATH WITH MRS. SULSBERGER

Do NOW

Gather notebook

and pencil

Chat with your

friends

Jokes

Math

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Where in real life do we find or use area?

To build a dog house.

To put flooring in a home.

To lay grass down on a football field.

To add a garden to you back yard.

Drag and Drop

Something you might find the area of ​

Placeholder

Drag these tiles and drop them in the correct blank above

a wall that needs paint

a ceiling that needs dusting

a pool that needs to be filled with water

4.MD.3
PPT

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Let’s do another example:

The formula: l x w = Area

8cm x 4cm = 32 cm2

8cm

4cm

➢ In this example they tell us the length and the width so we

don’t have to count or measure.

Multiple Choice

How do you find the area of a rectangle?

• Length + Length + Length + Length
• Length + Width
• Length x Width
• Width x Width

Match

Match the following

12 inches squared

40 inches squared

77 inches squared

8 inches squared

• 12 inches squared

• 40 inches squared

• 77 inches squared

• 8 inches squared

4.MD.3
PPT

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Let’s do another example:

Now we have a missing side.

What do we do?

24 cm2

6cm

?

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Let’s do another example:

The top measurement is missing.

What do we do?

45 cm2

5 cm

?

Multiple Choice

 What is the missing measure if the Area is 50 m² ?

• 10 m

• 45 m

• 10 m²

• 7 m

Multiple Choice

What is the length of the missing side?

• 7 sq ft

• 7 feet

• 6 sq ft

• 8 feet

Dropdown

​ ​ ​

Select answer

Fill in the Blanks

Did the student solve the problem correctly?

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➢

Perimeter is the fence AROUND a
shape.

➢

Area is the space inside a 2-D
shape.

Multiple Select

How are you doing?

• A

• B

• C