1. L/O – TBAT convert between fractions and percentages using visual representations
Security Camera

2. I want to make sure this glass is exactly half full of water but I have no measuring device.
How do I do it?

5. 50%
100%
75%
25%
31.25%

7. What fraction of this shape is shaded? Can you write it as a percent?
Extension:
What fraction of this shape is shaded? Can you write it as a percent?

8. 100%
50%
75%
25%
31.25%

9. The shop owner wants to prevent shoplifting.
The diagram shows the plan view of a shop with ten people standing in it
The shop owner wants to prevent shoplifting.
He decides to install a security camera on the ceiling of his shop.
He places the camera on the wall of the shop (at point P)
The camera can turn through 360° P 9

10. Which people can the camera NOT see?
How many squares are hidden from the camera?
What is this as a fraction?
What is this question as a percentage? 10

11. The shopkeeper decides to move the camera to the corner
Which people can the camera NOT see?
How many squares are hidden from the camera?
What is this as a fraction?
What is this question as a percentage? 11

12. -Your job is to find the best place for the camera to be installed12

13. A shop owner wants to prevent shoplifting.
He decides to install a security camera on the ceiling of his shop.
He places the camera in the corner of the shop (at point P)
The camera can turn through 360°
The diagram shows a plan view of the shop with ten people standing in it

14. Which people can the camera NOT see?
How many squares are hidden from the camera?
What is this as a percentage?
(a) What do you think is the best place for the camera, so that it can see as much of the shop as possible.
(b) How you know that this is the best place for the camera?

15. Which people can the camera NOT see?
What percentage of the shop is hidden from the camera? 
(a) What do you think is the best place for the camera, so that it can see as much of the shop as possible.
(b) How you know that this is the best place for the camera? 15

16. Which people can the camera NOT see?
What percentage of the shop is hidden from the camera? 
(a) What do you think is the best place for the camera, so that it can see as much of the shop as possible.
(b) How you know that this is the best place for the camera? 16

17. -This supermarket wants to protect their store with security cameras
Sweets
Meat
Bread
Drinks
Fruit and Veg
Entrance
-This supermarket wants to protect their store with security cameras
-What is the minimum number of cameras they need to cover the whole store?

18. The supermarket owner installs 3 security cameras
Sweets
Meat
Bread
Drinks
Fruit and Veg
Entrance
The supermarket owner installs 3 security cameras
-Are there any blind spots?

19. Sweets Meat Drinks Bread Fruit and Veg
Entrance
The supermarket owner want you to install 3 cameras so that the whole of the store is covered. Can you achieve this?

20. A B
The owner of this shop can either install a security camera at location A or location B
What percentage coverage does each location provide?
Is there a better location for the camera?