04e705d5_c__St__Science_SOL_s___Socrata__Subject
[Row number] 246 [Grade] 4 [SOL] 4.1c [SOL Text] The student will plan and conduct investigations in whichc) variables that must be held constant in an experimental situation are defined; [Essential Knowledge] In order to conduct an experiment, one must recognize all of the potential variables or changes that can affect its outcome.A manipulated variable is the factor in an experiment that is altered by the experimenter. A responding variable is the factor in an experiment that changes as a result of the manipulated variable.Analyze the variables in a simple experiment and decide which must be held constant (not allowed to change) in order for the investigation ot represent a fair test. [Key Words] Investigation Variables [Marking Period] All [Subject] 
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