Variable

Key Stage 2

A variable is something that you can change, keep the same, or measure/observe in an investigation.

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.

An investigation to test the claim: All leaves are green.

Oak Leaf	Beech Leaf	Ash Leaf

Maple Leaf	Chestnut Leaf	Variables
		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