Learning Targets

1.01B - I can design an experiment and/or evaluate the effectiveness of an experimental design, taking into account independent variable, dependent variable, and control variables.

Can you...

• Identify and classify experimental variables as independent, dependent or controlled.
  
• Make qualitative (non-mathematical) predictions about the relationship between variables
  
• Record the procedure used to gather data from the apparatus
  
• Construct and label a data table
  

Three types of variables:

• Independent variable - the variable that is changed on purpose by the experimenter (It is what intentionally changed.)
  • There can only be one independent variable
• Dependent variable - (responding variable) the factor or variable that may change as a result of the changes purposely made in the independent variable (It depends on what was intentionally changed.)
  
• Variable held constant (constant/control) - factors in an experiment that are kept the same and not allowed to change or vary.