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Published byWilfrid Wells Modified over 8 years ago
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Scientific Method Review
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The scientific method is used by scientists to solve problems It is organized and reproducible (can be repeated by other scientists) The steps are in a certain order, but if more questions are generated from the experiment it can cycle back to an earlier step and continue Scientific Method: Basics
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State the Problem State the problem: What are you trying to solve? What is the issue being investigated? This should be in the form of a question
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Research Background research is then done to learn more about the topic Research should help you decide what you think will happen in the experiment
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Hypothesis A educated guess based on what you know The research you did helps you to decide what the outcome of your experiment might be
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Test These are the steps of your experiment- how you actually test your hypothesis List materials and procedure Create and fill in data tables
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Analysis Create graphs (visual representations) of your data ALL EXPERIMENTS SHOULD HAVE AT LEAST ONE GRAPH
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Circle Graph Show percentages of a whole
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Bar Graph Compares categories
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Line Graph Shows direct ratio between two variables Most commonly used to show change over time
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The analysis section also explains what the graph MEANS. What does the graph show? What happened in the experiment? How do you explain data that doesn’t seem to fit the graph? Analysis
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Conclusion Explains whether your hypothesis was right or wrong, and how you know that Explains possible reasons for errors, as well as things that could be improved next time
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Multiple Trials The more trials you have, the more accurate your experiment will be Each experimental change (i.e. type of paper for paper airplanes) needs to be tested multiple times
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Control Group Every experiment needs a control group- a group of test subjects that you do not change, to compare to your experimental group(s) Ex: a plant that gets just plain water when you’re testing how salt water affects plants
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