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You may doodle while waiting for your classmates to log in.

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I can tell when a measurement is describing perimeter, and solve for a shapeโ€™s perimeter.

Common Core Standards: Grade 3

Measurement & Data: Geometric measurement: Recognize perimeter as an attribute of plane figures and distinguish between linear and area measures.

3.MD.D.8: Solve real-world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and exhibiting rectangles with the same perimeter and different areas or with the same area and different perimeters.

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3 of 20

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What is the perimeter this figure?

* show your work!

units

4 of 20

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What is the perimeter this figure?

units

5 of 20

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What is the perimeter this figure?

* show your work!

units

6 of 20

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What is the perimeter this figure?

units

7 of 20

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What is the perimeter this figure?

* show your work!

units

8 of 20

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What is the perimeter this figure?

* show your work!

units

9 of 20

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What is the perimeter this figure?

10 of 20

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What is the perimeter this figure?

16 units

Perimeter:

1 + 1+ 1+ 1+ 1 + 4 + 3 + 4 = 16

11 of 20

What is the perimeter this rectangle?

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units

12 of 20

What is the perimeter this rectangle?

7

4

4

7

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Perimeter:

4 + 7 + 4 + 7 = 22 units

13 of 20

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How can you find the perimeter this rectangle?

14 of 20

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How can you find the perimeter this rectangle?

Perimeter:

6 + 5 + 6 + 5 = P

15 of 20

What is the perimeter this rectangle?

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6 inches

3 inches

inches

16 of 20

What is the perimeter this rectangle?

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6 inches

3 inches

18 inches

Perimeter:

3 + 6 + 3 + 6 = P

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Olivia is outlining her rectangular patio with string lights along the edges.

The patio is 11 units long and 8 units wide. How much string lighting does she need?

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Olivia is outlining her rectangular patio with string lights along the edges.

The patio is 11 units long and 8 units wide. How much string lighting does she need?

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11 units

11 units

8 units

8 units

Option B: 38 units

Perimeter:

8 + 11 + 8 + 11 = P

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8 units

8 units

4 units

4 units

How can you find the perimeter this rectangle?

20 of 20

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Perimeter:

8 + 4 + 8 + 4 = P

How can you find the perimeter this rectangle?

Option D:

8 units

8 units

4 units

4 units