Difference between revisions of "Variable"
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: There are three types of variable. | : There are three types of variable. | ||
*[[Independent Variable]]: The thing you choose to change in an [[investigation]]. | *[[Independent Variable]]: The thing you choose to change in an [[investigation]]. | ||
− | *[[Control Variable]]s: The things you keep the same in an [[investigation]] to make it a fair test. | + | *[[Control Variable]]s: The things you keep the same in an [[investigation]] to make it a [[Fair Test|fair test]]. |
*[[Dependent Variable]]: The thing you measure or observe in an [[investigation]]. | *[[Dependent Variable]]: The thing you measure or observe in an [[investigation]]. | ||
− | + | : In an experiment or investigation there should only be 1 independent variable. If you change more than one thing at a time, it is not a [[Fair Test|fair test]]. | |
===Examples=== | ===Examples=== | ||
An investigation to test the claim: All leaves are green. | An investigation to test the claim: All leaves are green. | ||
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*'''Independent Variable''': Where you chose to put the cress seeds. | *'''Independent Variable''': Where you chose to put the cress seeds. | ||
*'''Dependent Variable''': The observations of the cress seeds. | *'''Dependent Variable''': The observations of the cress seeds. | ||
− | *'''Control Variable''': How long you left them for. They should all be left for the same amount of time or it's not a fair test. | + | *'''Control Variable''': How long you left them for. They should all be left for the same amount of time or it's not a [[Fair Test|fair test]]. |
− | *'''Control Variable''': How much you watered them. They should both be watered the same amount to make it a fair test. | + | *'''Control Variable''': How much you watered them. They should both be watered the same amount to make it a [[Fair Test|fair test]]. |
|} | |} |
Revision as of 09:34, 20 August 2018
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.
- In an experiment or investigation there should only be 1 independent variable. If you change more than one thing at a time, it is not a fair test.
Examples
An investigation to test the claim: All leaves are green.
Oak Leaf | Beech Leaf | Ash Leaf |
Maple Leaf | Chestnut Leaf | Variables |
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Results Table | Variables |
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Experiment | Variables |
Cress seeds were put in pots with soil with half placed in a dark cupboard and half on a windowsill. |
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