1.
Revise averages orally using concrete examples with students’ experiences before doing the
abstract activities in the unit.
2.
The children are constructing pie charts for the first time in the mathematics curriculum. Drawing
pie charts is conceptually difficult and involves calculations that are comparatively complex to the
other content in the Data strand. Revise 360° in a circle and explore fractions of a full rotation,
1
e.g. what fraction of 360° is 90°, what is
of 360°. Revise the process for finding a unitary and
10
multiple fraction of a number. Revise constructing an angle using a protractor.
Fans:
1
1
If
= 6 what is the whole number. Repeat with different fractions:
=9,
3
4
3
1
=72,
=76, etc.
4
3
Answer the following questions from the timetable:
How long does it take each bus to complete each journey?
Why does it take some buses longer? (Numerous stops on the route/express bus/cafe stop)
Use similar data charts to ask questions. Ensure the content is sufficiently easy to allow the children
answers the questions orally.
Bus A
Bus B
Bus C
Bus D
Belfast Dep.
08.20
10.15
14.30
18.00
Dublin Arr.
10.30
12. 20
15 .45
23.10
1.
Concepts and processes from Fractions, Percentages and Lines and Angles strand units are
involved in this unit and require revision before pie charts can be constructed.
2.
Allow the use of Microsoft Excel for the creation of more complex pie charts.
3.
Collect examples of pie charts used by statistic agencies and by the media. Create a wall chart
displaying the use of pie charts in real life.
4.
Collect data from industrial sources, e.g. Engineers Ireland, and ask students to add graphs to
illustrate the data described.
1.
What is the title of the graph? (Favourite sports at Ashleaf Primary School)
2.
Is this graph a single bar chart or a multiple bar chart? (multiple bar chart)
3.
Is this graph a horizontal bar chart or a vertical bar chart? (vertical bar chart)
4.
What was the most popular sport in Year 1? (hurling)
5.
What was the most popular sport in Year 2? (hurling)
6.
How many people were surveyed in Year 1? (72)
7.
True or false? The average number of votes for a sport in Year 1 was 12. (false)
8.
What scale interval does this graph use? (1:3)