Scientific Method.

http://www.sciencebuddies.org/science-fair-projects/project_scientific_method.shtml?from=Blog

Key Info

• The scientific method is a way to ask and answer scientific questions by making observations and doing experiments.
• The steps of the scientific method are to:
• Ask a Question
• Do Background Research
• Construct a Hypothesis
• Test Your Hypothesis by Doing an Experiment
• Analyze Your Data and Draw a Conclusion
• Communicate Your Results
• It is important for your experiment to be a fair test. A "fair test" occurs when you change only one factor (variable) and keep all other conditions the same.
• While scientists study how nature works, engineers create new things, such as products, websites, environments, and experiences.
• If your project involves creating or inventing something new, your project might better fit the steps of the Engineering Design Process.
• If you are not sure if your project is a scientific or engineering project, you should read Comparing the Engineering Design Process and the Scientific Method.

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http://www.answers.com/topic/scientific-method

The principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to demonstrate the truth or falseness of the hypothesis, and a conclusion that validates or modifies the hypothesis.

Read more: http://www.answers.com/topic/scientific-method#ixzz265pTEahX