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Experiment
A scientific activity undertaken in order to make a discovery, test a hypothesis, or demonstrate a known fact.
Observation
The process of watching something carefully to gain information.
Hypothesis
A proposed explanation for observations used as a starting point for further investigation.
Variable
A factor that is manipulated or measured in an experiment.
Independent Variable
The manipulated variable in an experiment. What we change.
Dependent Variable
The measured variable in an experiment.
Control
A test in which no variable is manipulated in order to provide a natural standard.
Repeated Trial
The act of measuring multiple times and finding an average in order to decrease the chance of error.
(CER) Claim-Evidence-Reasoning
A method for giving conclusions about the results of an experiment.