1. Scientific Method

2. Observations 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.

3. Problem The problem is usually phrased as a question. Example:
Why won’t the car start?

4. Hypothesis 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.

5. A properly stated hypothesis needs to include:
1. The IV affecting the DV.
2. A complete written sentence.
IV = Independent Variable
The thing that caused the problem.
DV = Dependent Variable
The problem.

6. Example:
Independent variable = gasoline
Dependent variable = the car

7. Predictions
A 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….

8. Example:
If the car is out of gasoline,
and I add more gasoline,
then the car should start.

9. Experimental Designs
Conducting a controlled experiment means changing the independent variable (gasoline) to see the outcome of the dependent variable (whether the car will start).