Year 5 - Perimeter

Year 5 - Perimeter

Poll

Your Learning Journey

What do you already know about perimeter?

What would you like to find out? How are you going to get there?

• Pre-structural

• Uni-structural

• Multi-structural

• Relational

• Extended Abstract

Open Ended

What is the perimeter of a shape?

Type your ideas below.

Perimeter

Peri = around

Meter = measure

(latin meaning)

If we find the perimeter of a shape, then we measure around the edge of the shape.

Open Ended

Maths in Real LIfe

When might we need to measure the perimeter of something in real life?

Measuring perimeter

If each square is 1cm, what is the perimeter of this shape?

Remember, perimeter means the distance around the edge of the shape.

Fill in the Blank

What is the perimeter of this shape? (In cm)

Fill in the Blank

What is the perimeter of this shape? (in cm)

Open Ended

How do you know? Explain your reasoning.

Calculating perimeter

When we've been given some of the measurements, we can use them to help us find the total perimeter of a shape.

E.g. 8cm + 8cm + 8cm + 8cm = 32cm

or

8cm + 8cm = 16cm. 16cm x 2 = 32cm

Fill in the Blank

We've already been given some measurements for this shape. Using them to help you, can you find the total perimeter? (in cm)

Fill in the Blank

What is the perimeter of this shape? (in cm)

Fill in the Blank

What is the perimeter of this shape? (in m)

Fill in the Blank

What is the perimeter of this shape? (in cm)

Open Ended

Open Ended

What is the total perimeter of this shape?

Open Ended

What is the perimeter of this shape?

Open Ended

Open Ended

Poll

Your Learning Journey

Where are you on your learning journey?

How have you progressed today?

How would you like to improve further?

• Pre-structural

• Uni-structural

• Multi-structural

• Relational

• Extended Abstract