1. Experimental Design Using the scientific method
The scientific method is a way to answer questions and solve problem.
All true experiments must have:
1 independent variable
Dependent variables
Constants and/or controls

2. Steps in the Scientific Method
Question or Problem- This is what you are trying to find out. The question must be specific and testable.
Collect background information- Find out as much as you can about your question or problem. Use books, periodicals, notes, and experts to help you. Teacher directed notes fit here.

3. State Hypothesis: This is an educated answer to the problem/question
State Hypothesis: This is an educated answer to the problem/question. The words “I think or I believe” should not be used in the hypothesis. The hypothesis should be in “if…then…” format.
Test your hypothesis: Develop a procedure to find out whether your hypothesis is correct. The procedure is a detailed, step-by-step set of directions for carrying out your experiment.

4. Your procedure is a true experiment if it has the following:
An Independent Variable: The only change between the experimental groups. It is the difference between the groups. It is what you are testing!
A dependent variable: The effect or result that can be observed and measured in your experiment.
Constants: All parts of the experiment that are kept the same. Only one difference should be tested at a time in an experiment.
Control Group- A group used to compare the test groups against. The control group does not have anything done to it.

5. Collect Data: Measure and record the information you get from your procedure. These are sometimes called observations or results. Record your information carefully in a Data table. Display your information in a graph.
Quantitative-numerical
Qualitative- descriptive

6. Conclusion- The conclusion is the result or outcome of your experiment
Conclusion- The conclusion is the result or outcome of your experiment. A conclusion is a paragraph that addresses all of the following:
Answers your problem question.
Discusses if your hypothesis was correct.
Use evidence to explain whether the hypothesis was correct.
Discuss hidden variables or limiting factors.
How could you improve the experiment?
How could you extend the experiment?