Understanding Rectangles on a Grid

The video tutorial explains how to determine the dimensions of a rectangle on a grid, calculate its perimeter using both manual counting and a formula, and find its area by counting square units and applying a formula. The tutorial emphasizes understanding the geometric properties and applying mathematical formulas for perimeter and area.

What is the side length of each small square on the grid?

• 3 feet

• 2 feet

• 4 feet

• 1 foot

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CCSS.1.G.A.1

CCSS.2.G.A.1

How long is the shorter side of the rectangle?

• 2T

• 3T

• 5T

• 4T

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CCSS.HSG.CO.C.11

What is the length of the longer side of the rectangle?

• 9T

• 8T

• 6T

• 7T

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CCSS.3.MD.D.8

Which formula is used to calculate the perimeter of a rectangle?

• P = L + W

• P = 2L + 2W

• P = L * W

• P = 2L * W

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CCSS.4.MD.A.3

What is the perimeter of the rectangle?

• 20 ft

• 26 ft

• 22 ft

• 24 ft

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How is the area of a rectangle calculated?

• Area = L + W

• Area = L * W

• Area = L - W

• Area = 2L + 2W

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the area of the rectangle in square feet?

• 28 sq ft

• 30 sq ft

• 32 sq ft

• 34 sq ft

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How many square feet are inside the rectangle?

• 32

• 34

• 30

• 28

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the formula for the area of a rectangle using L and W?

• Area = L + W

• Area = L * W

• Area = 2L + 2W

• Area = L - W

What is the final step in calculating the perimeter or area?

• Leave units off until the end

• Add units at the start

• Divide by 2

• Multiply by 2