Contents
Key Stage 2
Meaning
A variable is something that you can change, keep the same, or measure/observe in an investigation.
About Variables
- There are three types of variable.
- Independent Variable: The thing you choose to change in an investigation.
- Control Variables: The things you keep the same in an investigation to make it a fair test.
- Dependent Variable: The thing you measure or observe in an investigation.
Examples
An investigation to test the claim: All leaves are green.
| Oak Leaf | Beech Leaf | Ash Leaf | ||
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| Maple Leaf | Chestnut Leaf | Variables | ||
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The leaves that were chosen were the independent variable. | The colour of the leaves was the dependent variable | The experiment was done at the same time of year for every tree because at different times leaves can change colour or fall off. This was a control variable |