2Observations Observations are made with your five senses. (Sight, taste, touch, hearing, smell)They are measurable facts and not opinions.Example:You get in the car and turn the key. Nothing happens.
3Problem The problem is usually phrased as a question. Example: Why won’t the car start?
4Hypothesis A possible solution to the problem. You may have several hypotheses for the same problem.Example:The car won’t start because there is no gasoline left in the tank.
5A properly stated hypothesis needs to include: 1. The IV affecting the DV.2. A complete written sentence.IV = Independent VariableThe thing that caused the problem.DV = Dependent VariableThe problem.
6Example:Independent variable = gasolineDependent variable = the car
7PredictionsA prediction statement sets the stage for an experiment. There are three key words in a prediction statement. They are: If, and, then.If the iv affects the dv,and I change the iv this way,then the dv will do this….
8Example:If the car is out of gasoline,and I add more gasoline,then the car should start.
9Experimental DesignsConducting a controlled experiment means changing the independent variable (gasoline) to see the outcome of the dependent variable (whether the car will start).