STARTER

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On Your WhiteboardsWork Out:

1. In this triathlon you do a 2k swim, a 43k bike and a 10k run. How far overall do they travel?

2. In a 4x400m relay, each person runs it in 42.9 seconds. How long does it take the whole team to finish?

3. Paula Radcliffe has the women’s record for the marathon. She completed it in 2h, 15min and 25 sec. The men’s record is 2h, 3min and 38 sec. What is the difference between these two times?

Learning Objectives

LO: To be able calculate areas of rectangles and rectilinear shapes. (Level 4/5)

Good if you can calculate areas by counting squares.

Even better if you can work out rectangles area using the formula.

Excellent if you can work out the areas of rectilinear shapes.

Olympic Area

Counting Squares

A square cm has a length of 1 cm. We say that it has an area of 1 cm2 ( 1 cm squared).

This rectangle contains six squares. Each of the squares has an area of 1cm2, so the area of the rectangle is 6cm2.

QuestionsCount the squares, to find the area of the Olympic boxing ring.

Answers

Did you get them right?

48 square cm

Perimeter

To work out the perimeter of a shape you add all of the sides together.

12m

12m

6m

6m

Question 2

Can you work out the perimeter with just two sides?

24m

12m

Answers

Did you get them right?Question 1= 36mQuestion 2= 72m

Now try some questions yourself

• ANSWERS

Have you spotted a rule that will help you work out the area?

Length x Width

To work out the area of a rectangle or a square you have to times the length by the width.

ExampleAn Olympic sandpit is 2.75m x 9m.

What is the area of the sandpit?

9m

2.75m

What is the area of the sandpit?

Answer

24.75m2

Now try some questions yourself

• ANSWERS

Compound Area

There are two methods to work out the area of a shape. Method 1• Divide the shape into separate squares and

rectangles.• Work out the area of each separate one and

then add them together.

Example

Compound Area

Method 2• Imagine the area as a huge rectangle with a

shape cut out.• Find the area of the large rectangle and

subtract it by the area of the part which is cut out.

Example

Question 2

What is the area of the podium?

3m

1m1m

1m

1m0.5m

HeightsGold= 1.5mSilver=1mBronze=0.5m

1m

0.5m

Answers

The answer to the question was-:3m2.

Now try some questions yourself

• ANSWERS

Olympic Relay Game

Rules

• Get into teams of 4.• Each team is an Olympic swimmer.• Each team is given a question.• Once you have got the answer take it back to

your teacher and they will give you another.• There are 8 questions in all and the first

team to answer them all is the winner.

By Ben Singleton

Connor JamiesonLewis Tetlow

James HargreavesEllie Langton

Philippa ThorntonJenna Lloyd

Hannah TyddMr B + Miss K

From Tarleton Academy