The variable that you change is the independent variable(which you change). This could be the amount of light, fertilizer or salt that you give to a plant to observe how it affects its growth. What you measure is the dependent variable(the variables that change due to the change in independent variable) eg mass of the plant each day or week, number of leaves or height. All other variables are called the control variables(variables that are constant throughout the experiment). These make the experiment a "fair test". In the above experiment if you were to vary the amount of salt in the soil then each plant must be given the same amount of light, fertilizer, water etc.
A science project that has variables can be an experiment that aquires for variable change.
independent, dependent, controlled
The thing that you change, from experiment to experiment.
controlled variable, dependent variable and independent variable
That means something that will change, basically, the point of your experiment
We Is Doing A Project On Control Variables.
A science project that has variables can be an experiment that aquires for variable change.
Dependent, Independent and Controlled
You should know you were the one taking the class
independent, dependent, controlled
The thing that you change, from experiment to experiment.
controlled variable, dependent variable and independent variable
That means something that will change, basically, the point of your experiment
Go to sciencebuddies.com it has a lot of good ideas
The problem in a science fair project just mean what are you trying to figure out in your experiment? Say your trying to figure out how smell affect taste that would be your problem.
A well designed science fair project should have one independent variable, one dependent variable, and lots of factors that are held constant as you repeat the experiment several times to verify your results.
The variable is the characteristic being changed while the control is left as is to see what would normally happen.