Data Handling Cycle

1
Plan
Collect
Process
Discuss
Whats inyour bowl?
2
Types of cereal
Collect
Process
Discuss
Plan
Whats in your bowl?
How many breakfasts can you name that contain..
Rice
Corn
Wheat
Oats
3
Diet concerns
Collect
Process
Discuss
Plan
Whats in your bowl?
Breakfast is really important!Just think - when
you wake up in the morning, your last meal was
probably more than 10 hours ago!
American doctors claim eating breakfast is the
secret to staying healthy. They say skipping the
first meal of the day increases the chances of
becoming obese or developing diabetes.
American doctors claim eating breakfast is the
secret to staying healthy.
4
Quick head count
Collect
Process
Discuss
Plan
Whats in your bowl?
Cereals are the most popular breakfast in the UK.
What percentage of your class have breakfast
cereal in the cupboard at home?
What is the average number of cereal packets that
your class has at home?
What proportion of your class ate breakfast this
morning?
5
Example statistics
Collect
Process
Discuss
Plan
Specifying the Problem
Whats in your bowl?
Cereals are the most popular breakfast in the UK
98 of households buy breakfast cereals.
On average, each household has 5 packets of
cereal (either opened or unopened) in the
cupboards.
Yet 1 in 5 children are skipping breakfast and
going to school on an empty stomach!
How does your class compare?
6
Current concerns
Collect
Process
Discuss
Plan
Whats in your bowl?
Its not just eating breakfast thats important
whats in your breakfast the nutritional
content of cereals is important too Lots of
doctors and dieticians are worried about whats
in cereals that are popular with children.
Its not just eating breakfast thats important
whats in your breakfast the nutritional content
of cereal is important too.
Its not just eating breakfast thats important
whats in your breakfast
Which cereals are most popular with children?
What might doctors and dieticians be worried
about?
What do you think these cereals contain too
much or too little of?
7
Typical contents of cereals
Collect
Process
Discuss
Plan
Whats in your bowl?
Parts of a breakfast cereal
Fibre (Bran)
Sugar
Salt
Protein
Fat
Carbohydrates General term for all types of
sugar (including starch) found in wheat, oats,
rice and corn.
8
Labels on cereals
Collect
Process
Discuss
Plan
Human proportions
Whats in your bowl?
Parts of a breakfast cereal
Boxes always have info for 100g portions.
Can you judge if the amount of salt, sugar or
fibre is enough or too little/much from just this
label?
A new set of labels has been designed to help.
9
Traffic Light System
Collect
Process
Discuss
Plan
Whats in your bowl?
Traffic Light System
Salt per 100g
Good
Bad
gt1¼g
lt¼g
¼ to 1¼g
Sugar per 100g
lt2g
gt10g
2 to 10g
Fibre per 100g
gt6g
lt3g
3 to 6g
10
Some issues for the system
Collect
Process
Discuss
Plan
Whats in your bowl?
Using the Traffic Light System
Traffic Light labelling is currently a possible
system. If it were to be used how many cereals
would score well and how many badly?
Would it help people to make healthy choices?
Is there really that much difference between
cereals?
To look at some of these issues we will use the
Problem Solving Approach
11
Problem Solving Approach
Collect
Process
Discuss
Plan
We report back what we found and compare it to
what we expected.
First we decide what problem to solve and what
First we decide what problem to solve and what
data we need
Plan
Discuss
Collect
Process
Then we collect suitable data.
Then we examine our data and make it easier to
understand.
12
A choice of problems
Collect
Process
Discuss
Plan
Whats in your bowl?
Which cereals do you want to investigate?
A particular type of cereal
The most popular cereals
e.g. rice-based
13
Oats, Wheat, Corn or Rice
Collect
Process
Discuss
Plan
Whats in your bowl?
Oats, Wheat, Corn or Rice?
Which type of cereal will you investigate (Oats,
Wheat, Corn, or Rice)?
What is the average content of salt, fibre and
sugar for this cereal type (across all brands) ?
Is there a brand which is all red?
Is there a brand which is all green?
Next
14
Favourite Cereals
Collect
Process
Discuss
Plan
Whats in your bowl?
Favourite cereals
Which cereals are most popular with children?
Why?
What is the average content of salt, fibre and
sugar for these cereals? What is the range of
contents?
What traffic lights labels would you give the
most popular cereals?
15
Which data?
Process
Discuss
Collect
Plan
Whats in your bowl?
Which data should we collect?
How big a sample should we take?
16
PSA cycle
Plan
Collect
Process
Discuss
The Problem Solving Approach
Plan
Discuss
Collect
Process
17
Example data set
Process
Discuss
Plan
Collect
Whats in your bowl?
18
PSA cycle
Plan
Collect
Process
Discuss
The Problem Solving Approach
Plan
Discuss
Collect
Process
19
Labels from chocolate cereals
Plan
Collect
Discuss
Process
Whats in your bowl?
Here are some labels that were collected from
chocolate flavoured cereals
Lets look at the how much fibre is found in each
cereal.
20
Alphabetical order
Plan
Collect
Discuss
Process
Whats in your bowl?
Fibre (g) found in 100g of cereal
This is in alphabetical order. What order is more
useful?
21
Numerical order
Plan
Collect
Discuss
Process
Whats in your bowl?
Max 20.7
Range 18.8
Median
Min 1.9
What information can we get from this list
straight away?
22
Graphical Representation
Plan
Collect
Discuss
Process
Whats in your bowl?
gt6g
3 to 6g
lt3g
How well do these cereals score on the traffic
light system?
23
PSA cycle
Plan
Collect
Process
Discuss
The Problem Solving Approach
Plan
Discuss
Collect
Process
24
Choice of discussions
Plan
Collect
Process
Discuss
Whats in your bowl?
Which cereals did you investigate?
A particular type of cereal
The most popular cereals
e.g. rice-based
25
Discussion Types
Plan
Collect
Process
Discuss
Whats in your bowl?
Oats, Wheat, Corn or Rice?
Which type of cereal did you investigate (Oats,
Wheat, Corn, or Rice)?
What was the average content of salt, fibre and
sugar for this cereal type (across all brands) ?
How many brands were all red?
How many brands were all green?
What was the most common set of colours?
Next
26
Discussion Popularity
Plan
Collect
Process
Discuss
Whats in your bowl?
Favourite cereals
Which cereals are most popular with children?
Why?
What is the content of salt, fibre and sugar for
the most popular cereals?
What traffic lights labels would you give the
most popular cereal?
Which is the healthiest of the popular choices?
27
PSA cycle
Plan
Collect
Process
Discuss
The Problem Solving Approach
You can build on the first try by continuing
here...
Plan
Discuss
Collect
You are now here.
Process
Have you got all the evidence you want?
28
End of Slideshow
Plan
Collect
Process
Discuss
End of slideshow