v. 1. in this triathlon you do a 2k swim, a 43k bike and a 10k run. how far overall do they travel?...
TRANSCRIPT
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.
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.
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?
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.
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.
Question 2
What is the area of the podium?
3m
1m1m
1m
1m0.5m
HeightsGold= 1.5mSilver=1mBronze=0.5m
1m
0.5m
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.