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# 03 the scientific method

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### 03 the scientific method

1. 1. Keep the Miracle Gro’ experiment in mind We will have a quiz on this material tomorrow – Wednesday (9/18)
2. 2. What is a testable question? • A question that one can find an answer to through an activity or experiment The question begins with… • “How” • “Can” • “What” The question does not begin with “Why”
3. 3. “Why are strawberries so big?” “How does the amount of rainfall affect the size of strawberries?”
4. 4. What are some good resources?
5. 5. Hypothesis: A proposed answer to a question based on prior knowledge “If strawberries receive more than the average rainfall in a growing season, then their size will be above average.”
6. 6. A detailed, ordered process that includes the procedure and materials Control • Factor(s) not changed Control group • The standard group used for comparison against the experimental group
7. 7. Variables • Factors that can be changed Independent variable • Factor that the experimenter is manipulating Dependant variable • Factor that responds to the independent variable
8. 8. Data • Detailed information gathered during the experiment stated clearly without opinion • 2 types of data  Quantitative – numerical, must include units (metric)  Qualitative – descriptive, using sensory input • How is data organized?
9. 9. How can data be displayed? Every graph should include: • Title that clearly identifies the relationship between independent and dependant variable • Labeled axes, including appropriate units • Consistent and appropriate scale
10. 10. Conclusion – A clear, well-focused analysis of the question based on the data and observations collected
11. 11. In a perfect conclusion you will find:  A claim, well supported by relevant data  Important information  Appropriate terminology  More than the obvious or predictable  Details in logical order  Complete, well constructed sentences  No personal pronouns  Facts states clearly without opinion
12. 12. Why is this important?
13. 13. 2 types • Deductive  The use of a general concept that is applied to a specific situation • Inductive  The use of specific facts to create a general rule