1. C O L U M N G R A P h
Session 1

2. Numeracy lesson and differentiation

3. Content
Environment
Process
Product

4. C O L U M N G R A P h
We all have the same width
Same width

5. Key words
Data: information
Survey: a way of collecting information
Column graph: Column graphs are an excellent way to show results that aren't continuous - especially samplings such as surveys.
Conduct: organize and carry out.
Census: it is a survey that surveys the whole population or group.
Horizontal axis: this is a line running across the graph. It has a label beneath it.
Vertical axis: this is a line running up the side of a graph. It has a label next to it.
Scale:
The scales on horizontal or vertical axes are similar to the scales found on many measuring instruments. A scale is a series of numbers that are increasing or decreasing by the same amount. Part of the skill of interpreting a graph is reading the scales on the axes. Each scale will be labelled with the unit of measurement that has been used.

6. What is a survey?
Helps to find the views of the whole community or group
Surveys are a primary source of information
Survey
Uses questions
A way of collecting information
Census
Sample
Surveys the whole population
Surveys a selected group

7. How to conduct a survey 5- Graph your results
,,,.
5- Graph your results
4- Choose a suitable graph
3- Record your results in a table
2- Ask people your question
1- Think of a question
How to conduct a survey
Type of sport
Basketball
Volleyball
Soccer
Netball
Number of students 7 5 9 2

8. DIFFERENT TYPES OF GRAPHS
Line graphs
Sector graphs
Picture graphs
Bar graphs
Step graphs
Column graphs

9. Column graph
Column graphs have a series of vertical blocks.
Column graphs can be distinguished from histograms because the blocks always have gaps between them while histograms have no gaps.

10. Use of column graphs
A column graph is used to show relationships between groups.
Column graphs are an excellent way to show results that are one time, that aren't continuous - especially samplings such as surveys.

11. Origin of the words graph and data

12. How to construct a column graph.
1-Draw two axes: one vertical and one horizontal. Make sure you leave room at the edge of the page for your labels.
2- Always place numbers on the vertical axis. Non-numerical groups are on the horizontal axis
3- Label each axis
3- Columns should be of the same width and should not touch at all.
4- Leave half of the column width at the start.
5 - The scale should go up evenly and cover the largest and smallest values.
6- Include scientific units where appropriate.
7- Include a title to explain what the graph is about. Your title should start with: Graph of……..

13. Things you should follow when drawing a column graph
use grid paper
Leave half of the column width at the start
Column graphs have a series of vertical blocks.
Always place numbers (numerical groups)on the vertical axis.
Columns should be of the same width and should not touch at all.
use a pencil
Non-numerical groups are on the horizontal axis.
Draw in the two axes
with a ruler

14. Graph of parents’ region of birth
Columns
Graph of parents’ region of birth
Title
All columns should have the same width
The Vertical axis going up shows frequency (Numbers)
1 cm
Number of students
Numbers are placed on the vertical axis
Legend
A gap at the start which is half of the column width (0.5 cm or 5mm)
Region of parents’ birth
The spacing between the columns is kept the same
The horizontal axis (going across) shows the items

15. A census was carried out by 7A who has a total of 21 students to find out important information.
This information include the following:
Region of parents’ birth
Region of students’ birth
Month of birth
Number of siblings

16. 5 6 1 8 Draw a suitable graph for your data.
This table shows parents’ region of birth of 7A 2014.
Parents’ region of birth
Australia
Pacific Islands
Asia
Middle East
other
Number of students 5 6 1 8
Draw a suitable graph for your data.

17. Title Graph of parents’ region of birth Add a title
Step 1: Draw the axes
Step 2: Always place numbers on the vertical axis. Non-numerical group on the horizontal axis.
Step 3: Label the axis
Step 4: Setting up the scales. Count how may squares represent 1 on vertical axis.
Number of parents
On the horizontal axis, Leave 0.5 gap for the start (1 square) (half of the column width)
1 cm
Step 5: Putting up the values and drawing the columns
columns should be of the
same width (1cm)..
Middle East
Australia
Pacific Islands
Asia
Other
Region of parents’ birth

18. Students to get a grid paper and draw one at the same time.

19. Graph of parents’ region of birth
Number of parents
Region of parents’ birth

20. Graph of parents’ region of birth
Number of parents
Region of parents’ birth

21. Title Region of students’ birth Number of students 18 6
1 cm
Number of students 18 6
Australia
Pacific Islands
Asia
Other
Middle East
Region of students’ birth

22. Title Month of birth Month of birth 1st quarter = J,F,M
2nd quarter = A,M,J
3rd quarter = J,A,S
4th quarter = O,N,D
Number of students 5 7 6
2nd quarter
1st quarter
3rd quarter
4th quarter
Month of birth

23. Title Month of birth Summer: D,J,F Autumn: M,A,M Winter: J,J,A
Spring: S,O,N
Number of students 8 4 4
Autumn
Summer
Winter
Spring
Seasons

24. Title Number of siblings Number of students 5 4 2 Number of Siblings 1
0 sibling
2 siblings
3 siblings
4 siblings
5 siblings 7+
6 siblings
Number of Siblings

25. Station 2
Station 3
Station 4
Station 1

26. Feedback from each student
Evaluation
and
Feedback from each student

27. Student feedback and evaluation
Class: Date:
Lesson:

28. By Zani Alam