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Any specific measurement or quantification of a variable.
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.
It is the variables you will not change to keep the experiment a fair test, they should be kept constant to show how your independent variable affects your dependant variable.
it is a variable that you allow to stay the same throughout the experiment.
i need a friken science fair project
what can i do with yeast for a science fair project
When some thing stays the same.
It is the variables you will not change to keep the experiment a fair test, they should be kept constant to show how your independent variable affects your dependant variable.
Hypotheseis Procedure Materials Problem Question controls Independent variable Dependent variable Data Graphs Conclusion
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the independet variable would be the type of fruits used and the dependent variable would be the electricity they generate.
it's better to have a control but no you do not have to have a control in a science fair project