Statistics Summer - Block 4 - White Rose Maths

Summer - Block 4

Statistics

 ©White Rose Maths

Year 4 | Summer Term | Week 7 – Statistics

Overview
Small Steps Notes for 2020/21

 Interpret charts Less time is allowed for this block
 than there has been in previous
 Comparison, sum and difference years to ensure more time can be
 Introducing line graphs spent on number. Science is a
 good opportunity to consolidate
 Line graphs
 statistics if needed.

 62 ©White Rose Maths

Year 4 | Summer Term | Week 7 – Statistics

Interpret Charts
Notes and Guidance Varied Fluency
Children revisit how to use bar charts, pictograms and tables to Complete the table using the information in the bar chart.
interpret and present discrete data.
They decide which scale will be the most appropriate when
drawing their own bar charts.
Children gather their own data using tally charts and then
present the information in a bar chart. Questions about the
data they have gathered should also be explored so the focus
is on interpreting rather than drawing.

Mathematical Talk What is the most/least popular way to get to school?
 How many children walk to school?
What are the different ways to present data? Produce your own table, bar chart or pictogram showing how the
What do you notice about the different axes? children in your class travel to school.
What do you notice about the scale of the bar chart?
What other way could you present the data shown in the bar Represent the data in each table as a bar chart.
chart?
What else does the data tell us?
What is the same and what is different about the way in which
the data is presented?
What scale will you use for your own bar chart? Why?
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Year 4 | Summer Term | Week 7 – Statistics

Interpret Charts
Reasoning and Problem Solving
 Halifax City Football Club sold the Possible answer: Here is some information about the Possible response:
 following number of season tickets: I would represent number of tickets sold for a concert. I would tell Jack to
 • Male adults – 6,382 the data in a table use a different
 • Female adults – 5,850 because it would scale for his bar
 • Boys – 3,209 be difficult to show chart because the
 • Girls – 5,057 the exact numbers numbers in the
 accurately in a table are quite
 Would you use a bar chart, table or pictogram or bar Jack starts to create a bar chart to large.
 pictogram to represent this data? chart. represent the number of concert tickets The scale could go
 Explain why. sold during the week. up in 5s because
 the numbers are
 all multiples of 5
 Alex wants to use a pictogram to It is not a good Jack needs to
 represent the favourite drinks of everyone idea, because it record the title and
 in her class. would be difficult he needs to label
 to show amounts the axes.
 I will use this image which are not What advice would you give Jack about
 to represent 5 children. multiples of 5 the scale he has chosen?
 What would be a better scale to use?
 Explain why this is not a good idea. Is there anything else missing from the
 bar chart?
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Year 4 | Summer Term | Week 7 – Statistics

Comparison, Sum & Difference
Notes and Guidance Varied Fluency
Children solve comparison, sum and difference problems
using discrete data with a range of scales.
They use addition and subtraction to answer questions
accurately and ask their own questions about the data in
pictograms, bar charts and tables.
Although examples of data are given, children should have the
opportunity to ask and answer questions relating to data they How many more points does the Sycamore team have than the Ash
have collected themselves. team?
 How many points do Beech and Oak teams have altogether?
Mathematical Talk How many more points do Ash need to be equal to Oak?
 How many people voted in total?
 1
What does a full circle represent in the pictogram? of the votes were for _________.
 4
What does a half/quarter/three quarters of the circle 7 more people voted for __________
represent? than ____________.

What other questions could we ask about the pictogram? As a class, decide on some data that you would like to collect, for
 example: favourite books, films, food.
What other questions could we ask about the table? Collect and record the data in a table.
What data could we collect as a class? Choose a pictogram or a bar chart to represent your data, giving
 reasons for your choices.
What questions could we ask about the data?
 What questions can you ask about the data?
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Year 4 | Summer Term | Week 7 – Statistics

Comparison, Sum & Difference
Reasoning and Problem Solving
 Rosie has read the • False
 bar chart The Film Land
 incorrectly. Cinema had 9
 15 people chose more visitors that
 vanilla, 19 people Maltings Castle
 chose chocolate,
 10 chose • True
 strawberry and 12 True or false? 1,282 doubled is
 chose mint. 2,564
 That means 56
 • The same number of people visited
 people were asked • True
 Maltings Castle as Film Land Cinema
 altogether. Animal World
 on Saturday.
 Zoo - 3,846
 • Double the number of people visited
 Rosie says, Maltings Castle -
 Animal World Zoo on Sunday than
 We asked 54 people 3,865
 Saturday.
 altogether. Primrose Park -
 • The least popular attraction of the
 3,277
 weekend was Primrose Park.
 Film Land
 Can you spot Rosie’s mistake? Cinema -
 How many people were asked 3,649
 altogether?
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Year 4 | Summer Term | Week 7 – Statistics

Introducing Line Graphs
Notes and Guidance Varied Fluency
Children are introduced to line graphs in the context of time. The graph shows the temperature in the playground during a
They use their knowledge of scales to read a time graph morning in April.
accurately and create their own graphs to represent
continuous data. The temperature at 9 a.m. is
It is important that children understand that continuous data _______ degrees.
can be measured (for example time, temperature and height)
but as values are changing all the time, the values we read off The warmest time of the
between actual measurements are only estimates. morning is __________.

Mathematical Talk
How is the line graph different to a bar chart? Class 4 grew a plant. They measured the height
 of the plant every week for 6 weeks.
Which is the and axis? What do they represent? The table shows the height of the plant each week.

How would you estimate the temperature at 9:30 a.m.?

How would you estimate the time it was when the temperature Create a line graph to represent this information.
was 7 degrees? What scale would you use on the and axes?
 Between which two weeks did the plant reach a height of 10 cm?
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Year 4 | Summer Term | Week 7 – Statistics

Introducing Line Graphs
Reasoning and Problem Solving
 Jack launched a toy rocket into the sky. Graph A Tommy created a line graph to show the Tommy is
 After 5 seconds the rocket fell to the The height of the number of dogs walking in the park one incorrect because
 ground. rocket increases afternoon. you cannot have
 Which graph shows this? then decreases 1.5 dogs.
 Explain how you know. quickly again,
 returning to a A better way of
 height of 0 at 5 presenting this
 seconds. data would be
 using a bar chart,
 Example story: pictogram or table
 A bird flew up because the data
 from the ground. It is discrete.
 continued to fly Tommy says,
 upwards for 5 At half past one
 seconds then flew there are 1.5 dogs
 at the same height in the park.
 for another 3
 seconds. Why is Tommy incorrect?

 Make up your own story for the other What would be a better way of presenting
 graph. this data?
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Year 4 | Summer Term | Week 7 – Statistics

Line Graphs
Notes and Guidance Varied Fluency
Building from the last step, children continue to solve The graph shows the growth
comparison, sum and difference problems using continuous of a plant over 6 months.
data with a range of scales. • How tall was the plant
They use addition and subtraction to answer questions when it was measured
accurately and ask their own questions about the data in line in May?
graphs. Although examples of data are given, children need to • In what month did the
have the opportunity to ask and answer questions relating to plant first reach 50 cm?
data they have collected themselves. • How many centimetres
 did the plant grow
 between March and July?
Mathematical Talk • What was the difference between the height of the plant in
 February and the height of the plant in April?
Is this discrete or continuous data? How do you know?
 The graph shows the weight of a puppy
What do you notice about the scale of the graph? as it grows.
 When the puppy is ____ months old the
How could you make sure you read the graph accurately? weight is ____kg
 Between month ____ and month ____ the
What other questions could you ask about the graph? puppy increased by ____ kg

How many different ways can you fill in the stem sentences?
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Year 4 | Summer Term | Week 7 – Statistics

Line Graphs
Reasoning and Problem Solving
 Eva measured the temperature of a cup I do not agree with Write a story to match the graph. Example story:
 of tea every 30 minutes for 2 hours. The Eva. At 9 a.m. the Mo drove 20 miles
 graph shows Eva’s results. temperature was in his lorry. At half
 80 degrees and at past 9 he had a 15
 9.45 a.m. the minute rest then
 temperature was drove for another
 50 degrees, so it 30 miles until he
 had dropped 30 reached his
 degrees not 20 destination at
 degrees. 10:30 a.m.

 Eva says,
 In the first 45 minutes
 the temperature of the
 tea had dropped by 20
 degrees.
 Do you agree with Eva?
 Explain why.

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