Transcript Document

How do you find the area of
a polygon when a square
unit is more than 1 square
unit?
In this lesson you will learn
how to find the area of a
polygon by using a key to
count the square tiles.
Let’s Review
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A Common Mistake
Core Lesson
Core Lesson
Core Lesson
Core Lesson
In this lesson you have
learned how to find the area
of a polygon by using a key to
count the square tiles.
Guided Practice
How can I use this key to find the area
of this carpet?
Extension Activities
Use the keys with each grid paper to find the
area of each shape. Be sure to pay
attention to the key and what you will need
to skip count by to find the area.
Extension Activities
Using grid paper, create your own 10
shapes. Remember they have to be closed.
Then create your own key for the grid paper
and find the area of each shape.
Extension Activities
You have grid paper with shapes on them
and you are given the area of the shapes.
Find what the key is by using the area and
the number of squares.
Quick Quiz
If 1 square equals 5 square inches,
what is the area of this plane figure?
The area of this football field is 36
square meters. How many square
meters is each square?