Handling data · Grade 4
In Handling data (Grade 4) you practise 4 skills: Organising data · Bar charts · Pictograms · Pie charts. To put results in a table, count how many times each result appears. The result that appears most often is the most common one.
In a bar chart, the height of each bar shows how many there are. Read the height against the lines on the axis. A double bar chart has two bars for each group, and the key tells you what each kind of bar shows. In a pictogram each picture is worth the number in the key. If each picture is worth 10, three pictures are 30 and half a picture is 5. A pie chart shows how a whole is shared out. A sector that is half the pie is half of the votes; a sector whose corner at the centre is a right angle is a quarter; and when the pie is cut into eight equal parts, each part is an eighth.
Tip: Before you answer, read the title and the key: what is being counted, and what each picture or each line on the axis is worth.
What you learn
Organising data
For example: Ten children said how many brothers and sisters they have. These are the answers: 3, 1, 2, 3, 3, 1, 1, 1, 3, 1 How many times does the number 1 appear in the list?
Answer and solution
The answer: 5
These are all the times 1 appears: 1, 1, 1, 1, 1 The number 1 appears 5 times.
Bar charts
For example: The pupils in the year group chose their favourite fruit.
Answer and solution
The answer: 10
The bar for Apple reaches 10. The lines on the scale go up in steps of 2.
Pictograms
For example: The pictogram shows how many books were borrowed each day.
How many books were borrowed on Tuesday?Answer and solution
The answer: 50
On Tuesday: 5 symbols. 5 × 10 = 50 On Tuesday, 50 books were borrowed.
Pie charts
For example: Every pupil in the class voted for a class representative. The pie chart shows how the votes were shared.
Who got the most votes?- Isla
- Jack
- Oliver
- Ava
Answer and solution
The answer: Oliver
Oliver’s sector is the biggest in the pie.
The exercises are made by rules and the answers are worked out in code, so there are new exercises every time. The topic follows the new Israeli elementary programme (2023).