New
New
Year 3

# Using graphs to represent lengths and heights

I can represent lengths and heights on a graph and use them to solve problems

New
New
Year 3

# Using graphs to represent lengths and heights

I can represent lengths and heights on a graph and use them to solve problems

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## Lesson details

### Key learning points

1. Information about length and height from a table can be represented in a bar graph.
2. Information represented in a bar graph can be used to solve problems.

### Common misconception

Mistakes may be made on comparison problems. E.g. how much further does one child jump than another?

When we compare, we are finding the difference. To find the difference, we need to subtract the smaller value from the larger value.

### Keywords

• Graph - A graph is a visual way of showing information. A Bar Graph uses bars of different lengths or heights to represent information.

• Axis - An axis on a graph is a fixed measuring line that runs horizontally (left to right) and/or vertically from zero:

Bar graphs are used to present discrete data. Data related to length and height might be considered continuous but the way it is used here is for comparison and is a measurement taken at one point in time and so is considered discrete data.
Teacher tip

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Starter quiz

### 6 Questions

Q1.
Match the multiples with their times-table.
Correct Answer:10, 15, 20, 25,Five times-table

Five times-table

Correct Answer:4, 6, 8, 10,Two times-table

Two times-table

Correct Answer:20, 30, 40, 50,Ten times-table

Ten times-table

Correct Answer:2, 3, 4, 5,One times-table

One times-table

Q2.
How tall is this mouse? Tick all the options that apply.
4 mm
40 cm
4 m
Q3.
Which of these values is the greatest?
120 m
102 m
112 m
Q4.
Look at this table showing estimated and actual lengths that children can kick a football. What does the 35 m represent?
The estimated length that Izzy can kick a football.
Correct answer: The actual length that Izzy can kick a football.
The actual length that Andeep can kick a football.
The estimate length that Jacob can kick a football.
Q5.
Match the letters to their appropriate number on this number line.

10

20

30

50

Q6.
Find the difference between 100 and 85.
185
25

## Exit quiz

### 6 Questions

Q1.
A line on a bar graph that runs horizontally (left to right) from zero is known as .
the graph
the title
Q2.
If we were to represent the data in this table in a bar graph, what maximum value would be needed for the numerical axis?
20
25
30
Q3.
If we were to represent the data in this table in a bar graph, what should the numbers labelled on the axis increase in?
Ones
Twos
Tens
Q4.
Look at the bar graph comparing the length of some objects. Match the object to its length.

10 cm

25 cm

5 cm

15 cm

15 cm

Q5.
Look at the bar graph comparing the length of some objects. Which object is the shortest?
Pencil
Book