Mathematics13.7.20

Focus: interpret and present discrete and continuous data using appropriate graphical methods, including bar charts and time

graphs

For video support in this session, please follow this link: https://hatfield-community-free-school.primarysite.media/media/monday-13th-july-2020-maths

Fluency

Please complete the four slides of fluency work before beginning your core maths

lesson.

Can you name these 3D shapes?

© Herts for Learning Ltd 05/06/20184

• factor• multiplication• groups of• lots of• divisible by

Are there more than 3 factor pairs?

Find the factor pairs of:

1212× =

12x =

12× =

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• multiply• divide• value• column• tenths• whole• decimal• fraction• place holder

40 ÷ 10 =

… is 10 times smaller than ……

40

Hundreds Tens Ones tenths hundredths

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• round• closest• nearest• ten• hundred• thousand• midpoint

We are rounding to the nearest 10.

678 is between … and …

The midpoint would be …

… is approximately equal to ….

678

© Herts for Learning Ltd 05/06/20187

9 x 2

670 680

675

4

4 40

3 4

6 2

1 12

Heptagonal Prism Cylinder Pentagonal Prism

Today, we will looking at bar charts.

I can answer questions about a bar chart.

I can work out harder questions about a bar chart.

In today’s lesson, you will see the following traffic light stars:

I feel very confident. I am ready

for a challenge!

Choose one of the tasks today.

I feel confident, I am going to complete this independently

Let’s Learn!Maya collected data about the ages of her friends who were playing in the

park after school yesterday.

The Ages of Children Playing in the Park after

School

Age in Years

Number of Children

4 or younger

6

5 11

6 9

7 12

8 14

9 or older 8

Number of

Children

3 or younger

5 6 7 8 9 or older

12

10

8

6

4

2

0

A Pictogram to Show the Agesof the Children Playing in the Park after School

Age in Months

14

She presented the data as a bar chart and showed it to her

teacher the next day at school.

He was very impressed, but he spotted five mistakes in the bar chart.

Can you spot them too?

Let’s Learn!Maya collected data about the ages of her friends who were playing in the

park after school yesterday.The Ages of Children

Playing in the Park after School

Age in Years

Number of Children

4 or younger

6

5 11

6 9

7 12

8 14

9 or older 8

Number of

Children

3 or younger

5 6 7 8 9 or older

12

10

8

6

4

2

0

A Pictogram to Show the Agesof the Children Playing in the Park after School

Age in Months

14

It is a bar chart, not a pictogram.

The bar should only reach 9 but it reaches 10.

Only 8 children were 9 or older, this says there

were 13.

It should say

years.

It should say 4 or older.

MonthNumber of Birthdays

January 2February 4March 1April 5May 3June 6July 5

August 2September 7October 5November 3December 4

Children in Year 4 are creatingbar charts to show how many of their birthdays are in each month.

Here, it is only possible to count the number of birthdays in each month in

whole numbers; it is not possible to count

half a birthday!This is discrete

data as there are no in-between

values.

Let’s Learn!

The first thing to do is gather the data in a table.

Let’s Learn!

A Bar Chart to Show the Number of Birthdays in Each Month for

Class 4

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sept

Oct

Nov

Dec

Months

Number of Birth

days 7

6

5

4

3

2

0

8

1

A number line is marked on the vertical axis.

The scale of this number line is chosen based on

the data range.

Bars are carefully drawn to visually show the data.

Each bar must be the same width.

Colour can be added to the bars to make the bar chart

eye-catching.

A bar chart has a horizontal axis and a vertical axis.

A bar chart must always have an underlined title explaining what it shows. Each axis must have a label explaining what it shows.

The data categories are

organised on the horizontal axis.There must be a gap between each

bar.

Let’s Learn!

MonthNumber of

Male Birthdays

Number of Female

BirthdaysJanuary 2 0February 1 3March 0 1April 3 2May 2 1June 2 4July 3 2

August 0 2September 3 4October 2 3November 3 0December 2 2

The number of birthdays has been split into two subcategories;boys’ birthdays and girls’ birthdays.

The table still shows the same

number of birthdays,

but the data has been split up to

give extra information.

We can draw a grouped bar chart to

show this data.

In a grouped bar chart, each category has more than one

bar!

A key or legend is used to identify the

subcategories of data.

Let’s Learn!Just like the first bar chart, a grouped bar chart has a horizontal and vertical axis which is marked with the categories and the number scale.

A Bar Chart to Show the Number of Birthdaysin Each Month for Class 4

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sept

Oct

Nov

Dec

Months

Number of Birth

days 7

6

5

4

3

2

0

8

1

= male birthdays

= female birthdaysThe key or legend.

The bars are still the same width, with a gap between the categories.

Your Task Can you draw a bar chart of the table of data you have been given, Then

answer the questions. You can use a ruler to create your own bar chart if you cannot print this. You do not need to draw the grid lines but the axis is needed.

I feel confident, I am going to complete this independently

Your Task Can you draw a bar chart of the table of data you have been given, Then

answer the questions. You can use a ruler to create your own bar chart if you cannot print this. You do not need to draw the grid lines but the axis is needed

I feel very confident. I am ready

for a challenge!

What have we learnt today?Some results are missing in the data chart. Using the bar chart, can you fill in the missing numbers?

All of your answers from today’s lesson, so you can self mark, can be found by following this link: