Reading bar charts and pictograms
The Maths Habit Handout to print
Votes for a new snack. Which snack won? How many votes did it get?
Fruit won. But we cannot say how many votes: it depends what one symbol is worth. That is what a key tells you.
- Pictogram
- A chart that uses symbols to show amounts.
- Key
- Tells you what one symbol is worth.
- Bar chart
- A chart that uses bars to show amounts.
- Scale
- The numbers up the side of a bar chart.
What is one symbol worth? Count along in that.
- Read the key.What is one symbol worth?
- Count along in that.One number under each symbol.
- Half a symbol is half of that.Sam: 4, 8, 12, then 14 goals
One symbol is 4. What is half a symbol worth?
One symbol is 10. What is half a symbol worth?
How many laps did Kai run? What is one symbol worth? Count along in that. 14 laps
How many parcels came on Monday? What is one symbol worth? Count along in that. 9 parcels
How many laps did Kai run? What is one symbol worth? Count along in that. 14 laps
How many votes did rock get? What is one symbol worth? Count along in that. 30 votes
How many laps did Kai run? What is one symbol worth? Count along in that. 14 laps
How many visits to the gym? What is one symbol worth? Count along in that. 10 visits
How many laps did Kai run? What is one symbol worth? Count along in that. 14 laps
How many more pizzas did Ben eat than Ali? What is one symbol worth? Count along in that. 4 pizzas
How many laps did Kai run? What is one symbol worth? Count along in that. 14 laps
How many tickets were sold altogether? What is one symbol worth? Count along in that. 35 tickets
What does each line go up in? Read across from the top of the bar.
- What does each line go up in?Read the numbers up the side.
- Read across from the top of the bar.A ruler or a finger keeps it level.
- Halfway between two lines is half a step.Tuesday: 25
What does each line go up in?
What does each line go up in?
How much rain fell in March, in mm? What does each line go up in? Read across from the top of the bar. 20 mm
How many students chose maths? What does each line go up in? Read across from the top of the bar. 7 students
How much rain fell in March, in mm? What does each line go up in? Read across from the top of the bar. 20 mm
How many people came by car? What does each line go up in? Read across from the top of the bar. 25 people
How many more visitors on Sat than on Sun? What does each line go up in? Read across from the top of the bar. 10 − 4 = 6
How many more visitors on Sat than on Sun? What does each line go up in? Read across from the top of the bar. 35 − 20 = 15
Answer sheet
Votes for music in the canteen. True or false? Thumbs up or down.
Pop had 50 votes.
TrueRap had 30 votes.
FalseRock had 15 more than jazz.
TrueThere were 100 votes in all.
False
One symbol is 6 people. How many people do 2 and a half symbols show?
15A bar ends halfway between the lines for 30 and 40. What does it show?
35One symbol is 4 people. How many symbols show 18 people?
4 and a half
How many goals did Leah score?
10 goalsHow many texts were sent on Monday?
25 textsHow many more teas were sold than juices?
40 − 25 = 15