### Lesson Powerpoint

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In this triathlon you do a 2k swim, a 43k bike
and a 10k run. How far overall do they travel?
In a 4x400m relay, each person runs it in 42.9
seconds. How long does it take the whole team
to finish?
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?
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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.
Questions
Count the squares, to find the area of the
Olympic boxing ring.
Did you get them right?
48 square cm
Perimeter
To work out the perimeter of a shape you add all
of the sides together.
6m
6m
12m
12m
Question 2
Can you work out the perimeter with just two
sides?
12m
24m
Did you get them
right?
Question 1= 36m
Question 2= 72m
Now try some questions yourself
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.
Example
An Olympic sandpit is 2.75m x 9m.
What is the area of the sandpit?
What is the area of the sandpit?
Now try some questions yourself
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
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?
1m
1m
1m
1m
0.5m
Heights
Gold= 1.5m
Silver=1m
Bronze=0.5m
The answer to the question was-:
3m2.
Now try some questions yourself
•
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 Jamieson
Lewis Tetlow
James Hargreaves
Ellie Langton
Philippa Thornton
Jenna Lloyd
Hannah Tydd
Mr B + Miss K