Identifying Variables Every experiment involves several variables - factors which can change

Independent Variables Also called “Manipulated variables” or IV This is the variable you PURPOSELY change and test ie - the temperature of the room

Dependent Variable Also called - “Responding Variable” or DV The factor that MAY CHANGE as a result of the Independent Variable ie: how fast plants grow in response to the temperature change.

Controlling Variables Keeping all conditions the same EXCEPT for the Independent Variable (IV) Ie: size of the container, type of soil, amount of water, amount of light, use of fertilizers, same kind of plants When all variables are controlled, you can then conclude that the differences in your results are due to the changes in the Independent Variable (IV)