Year 6 - Maths
Interpret line graphs representing two variables in familiar contexts
Statistics
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will interpret and construct pie charts and line graphs. They will read scales linked to fractions angles percentages and understanding proportional relationships.
Lesson Summary
You will learn to interpret line graphs representing two variables.
Key Notes
- A line graph is a way of representing the relationship between two variables.
- One variable is represented by the x-axis and the other by the y-axis.
- Points are plotted like coordinates with a value on the x-axis and a value on the y-axis.
Vocabulary To Learn
- Line graph: A line graph is a graph where the points are connected by lines. It shows how something changes in value, usually over time.
- Variable: A variable is something that changes and can also be measured.
- X-axis: The x-axis is the horizontal line on a graph which goes through zero.
- Y-axis: The y-axis is the vertical line on a graph which goes through zero.
Common Mistakes To Avoid
- Pupils may not understand that line graphs are only used for continuous data, where the points between those that are plotted have meaning.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
A line graph is a way of representing the relationship between two variables. One variable is represented by the x-axis and the other by the y-axis.
2. Use this key word in a maths sentence and explain it clearly. 'Line graph'
A line graph is a graph where the points are connected by lines. It shows how something changes in value, usually over time. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils may not understand that line graphs are only used for continuous data, where the points between those that are plotted have meaning. Correction: Show children examples of graphs where there is no meaning between divisions on the x-axis (e.g. heights of children). Here, the points cannot be joined to make a line graph.
More Lessons In This Unit
- Construct line graphs representing two variables in familiar contexts Study Guide
- Interpret the scales used in graphs, including pie charts, to solve problems Study Guide
- Use understanding of angles, fractions and percentages to construct pie charts Study Guide
- Use understanding of angles, fractions and percentages to interpret pie charts Study Guide
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