1. 3rd Grade Math Module 7 Lesson 13
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3rd Grade Math
Module 7 Lesson 13

2. I can solve problems involving perimeter.
Lesson 13 Learning Goal
I can solve problems involving perimeter.

3. Say the multiplication sentence
Lesson 13
I can solve problems involving perimeter.
Count by fours to 40.
4, 8, 12, 16, 20, 24, 28, 32, 36, 40 1
four 2
fours 3
fours 4
fours 5
fours 6
fours 7
fours 8
fours 9
fours 10
fours
Say the multiplication sentence
Equivalent Counting with Units of Four

4. Write a number sentence and
Lesson 13
I can solve problems involving perimeter.
Write a number sentence and
find the perimeter.
5 cm
2 cm
2 cm
5 cm
P = 5 cm + 5 cm + 2 cm + 2 cm
P = 14 cm
Find the Perimeter

5. Write a number sentence and
Lesson 13
I can solve problems involving perimeter.
Write a number sentence and
find the perimeter.
3 in
3 in
3 in
3 in
P = 3 in + 3 in + 3 in + 3 in
P = 12 in
Find the Perimeter

6. Write a number sentence and
Lesson 13
I can solve problems involving perimeter.
Write a number sentence and
find the perimeter.
7 ft
7 ft
3 ft
P = 7 ft + 7 ft + 3 ft
P = 17 ft
Find the Perimeter

7. Write a number sentence and
Lesson 13
I can solve problems involving perimeter.
Write a number sentence and
find the perimeter.
7 m
4 m
4 m
9 m
P = 4 m + 4 m + 7 m + 9 m
P = 24 m
Find the Perimeter

8. Write a number sentence and
Lesson 13
I can solve problems involving perimeter.
Write a number sentence and
find the perimeter.
6 cm
4cm
4cm
4cm
4cm
6 cm
P = 6 cm+6 cm+4 cm+4 cm+4 cm+4 cm
P = 28 cm
Find the Perimeter

9. Lesson 13 Use your index card to answer the questions.
I can solve problems involving perimeter.
Use your index card to answer the questions.
What is the perimeter of your index card in inches?
Place two index cards short end to short end. What do you predict the perimeter of your new shape will be?
Find the perimeter of the new shape. Was your prediction correct? Why or why not?
Application Problem

10. Lesson 13 P = 5+5+5+5+3+3 P = 5+5+3+3 P = 26 in P = 16 in 5 inches
I can solve problems involving perimeter.
Use your index card to answer the questions.
What is the perimeter of your index card in inches?
Place two index cards short end to short end. What do you predict the perimeter of your new shape will be?
Find the perimeter of the new shape. Was your prediction correct? Why or why not?
5 inches
5 inches
5 inches
P =
P = 26 in
P =
P = 16 in
3 in
3 in
3 in
3 in
5 inches
5 inches
5 inches
The perimeter of the index card is 16 inches. I predict the perimeter of the new shape will be double = 32 inches
The perimeter of the new shape is 26 inches. I was not correct because I did not subtract the 6 inches
in the middle.
Application Problem

11. How can you find the perimeter?
Lesson 13
I can solve problems involving perimeter.
How can you find the perimeter?
3 in
3 in
4 in
4 in
2 in
Write and solve an equation that shows the perimeter as the sum of the side lengths.
P =
P = 16 inches
Concept Development

12. Lesson 13 Find the perimeter. P = 3 + 9 + 8 + 7 P = 27 meters 9 m 3 m
I can solve problems involving perimeter.
Find the perimeter.
9 m
3 m
4 m
8 m
P =
P = 27 meters
Concept Development

13. Lesson 13 Find the perimeter. P = 7 + 5 + 12 + 7 + 10 P = 41 cm 7 cm
I can solve problems involving perimeter.
Find the perimeter.
7 cm
5 cm
10 cm
7 cm
12 cm
P =
P = 41 cm
Concept Development

14. Use suggested materials to continue
Lesson 13
I can solve problems involving perimeter.
Use suggested materials to continue
Concept Development.
Concept Development