Area and Perimeter Concepts

This video tutorial for 3rd graders explains how to calculate the area and perimeter of various shapes, including squares, rectangles, and irregular shapes. The teacher demonstrates step-by-step methods for finding these measurements, using addition for perimeter and multiplication for area. The tutorial also includes practical examples and exercises to reinforce the concepts, ensuring students understand how to apply these calculations to different shapes.

What is the main difference between area and perimeter?

• Area and perimeter both measure the outside.

• Area measures the outside, perimeter measures the inside.

• Area and perimeter both measure the inside.

• Area measures the inside, perimeter measures the outside.

How do you calculate the perimeter of a square?

• Multiply the length by the width.

• Add all four sides together.

• Multiply the length by itself.

• Add the length and width.

If a square has sides of length 4, what is its area?

• 16

• 20

• 12

• 8

What is the perimeter of a rectangle with sides 3 and 4?

• 7

• 12

• 16

• 14

How do you find the area of a rectangle?

• Add all sides together.

• Add the length and width.

• Multiply the length by itself.

• Multiply the length by the width.

What is the area of a rectangle with sides 9 and 11?

• 90

• 108

• 99

• 81

How do you calculate the perimeter of an irregular shape?

• Add all the side lengths together.

• Multiply the longest side by the number of sides.

• Multiply all sides together.

• Add the longest and shortest sides.

What is the perimeter of a pentagon with sides 5, 7, 8, 8, and 7?

• 30

• 35

• 40

• 45

If you divide an irregular shape into smaller rectangles, how do you find the total area?

• Add the perimeters of the rectangles.

• Multiply the areas of the rectangles.

• Add the areas of the rectangles.

• Subtract the areas of the rectangles.

What is the area of a shape if it covers 14 grid squares?

• 12

• 18

• 14

• 16