Expermental Method

The Expermental Method is usually used in researches that need an observation for an assertion made by a theory and to predict, verify, or refute it.

 

In fact it goes through 4 stages :

Theory All about facts and prooved ideas, that you are going to build a predection on it
Prediction Based on what you know about something, what do you think will happen if the conditions are different? No effect? strong effect? Something in between these two extremes? You cannot be certain about the prediction validation. We must test our prediction.
Experiment Make an experiment to verify the assumptions or one of them. (Record the number for your submission of results.)
Observations Observations should be taken daily and recorded accurately in order to be analysed. Anecdotal information that might prove to be useful later when the analysis of the data takes place should be noted (e.g. accidents, mistakes...etc.). I can use this methodolgy in the field of human factors and wayfinding which I use to do in college. ~ Source: http://www.tomatosphere.org/teacher-resources/teachers-guide/principal-investigation/scientific-method.cfm