Exploring Area and Perimeter Concepts for Grade 3

The video tutorial introduces third graders to the concepts of perimeter and area. It begins with an explanation of perimeter, including how to calculate it by adding the lengths of all sides of a polygon. The teacher provides examples and practice problems to reinforce learning. The tutorial then transitions to the concept of area, explaining how to calculate it by multiplying length and width. Again, examples and practice problems are provided to help students understand and apply the concept. The video encourages students to pause and try problems on their own, with answers available for self-checking.

What is the first step in calculating the perimeter of a polygon?

• Multiply the length by the width

• Divide the total length by the number of sides

• Count the number of sides

• Add the length of all sides

If a shape's perimeter is 22 units, which could be its sides?

• 5, 5, 6, 6

• 10, 2, 5, 5

• 7, 4, 7, 4

• 8, 2, 8, 2

What does 'polygon' mean?

• A shape with four sides

• A circular shape

• A shape with many sides

• A shape with no sides

If one side of a square is 5 units, what is the perimeter?

• 10 units

• 25 units

• 20 units

• 15 units

What is the perimeter of a shape with sides 8, 2, 4, 3, 2, 3, 2, 2?

• 24 units

• 26 units

• 30 units

• 28 units

How do you calculate the area of a rectangle?

• Add all sides

• Divide the perimeter by 2

• Multiply one side by itself

• Multiply the length by the width

What is the area of a rectangle with length 9 units and width 8 units?

• 27 units

• 144 units

• 17 units

• 72 units

For calculating area, what is the shortcut method mentioned?

• Adding all sides

• Multiplying length by width

• Counting the squares inside

• Dividing the perimeter by 4

What is the area of a square with sides of 10 units?

• 40 square units

• 20 square units

• 1000 square units

• 100 square units

If a rectangle has an area of 70 square units and one side is 10 units, what is the length of the other side?

• 7 units

• 70 units

• 10 units

• 60 units