Area & Perimeter

Area & Perimeter

What are they?

You have been given the task of measuring the distance around your new pool.

What questions will you ask?

Poll

What questions would you ask if you need to calculate the distance around the pool?

• How long is it?

• How deep is it?

• How wide is it?

• How cold is the water?

• How many people can fit in the pool?

Open Ended

So if this is our pool... what would be the perimeter (total distance around the outside the pool)?

Calculating Perimeter:

• side + side + side + side (s + s + s + s)

• (side + side) x 2

What if there were no numbers?

Open Ended

What is the perimeter of this shape?

You need to measure how much area this rug will cover.

What questions would need to ask?

Poll

What questions would you ask if you need to calculate the area of floor covered by this rug?

• How long is it?

• How soft is it?

• How wide is it?

• What is it made from?

• How many people can lay on the rug at the same time?

Open Ended

So what is the area of this rug?

Calculating Area

-Sum of square units

-Units squared (units²)

-Length x Width (Rectangles)

What other squared units could we use to measure an area?

What if there are no numbers?

Open Ended

What is the area of this shape?

Does the area and perimeter need to be the same number?

What do you notice about these shapes? What is the same? What is different?