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Sci Meth Intro Audio

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My take on the scientific method. Used for 6th to 9th grade.

My take on the scientific method. Used for 6th to 9th grade.

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Transcript

  • 1. The Scientific Method
    • http://www.virtualsciencefair.org/2004/mart4m0/public_html/process2.jpg
  • 2. 1. Define the Problem
        • Based on observations & form a question
        • Collect existing info
  • 3. 2. Form a Hypothesis
    • a. A testable explanation to the problem
    • b. Cannot be accepted until supported by a large number of tests
    • c. May need to be revised or dismissed
  • 4. 3. Design a Controlled Experiment
    • a. Set up to test hypothesis
    • b. Must test only one condition
    • c. All conditions are alike except for the variable
  • 5. Controlled Exp cont’d
    • 1. (Experimental) Variable : the one factor being tested
    • 2. Two Groups: same conditions except for variable
    • a) Control Group : not exposed to variable
    • b) Experimental Group : exposed to variable
  • 6. 4. Observations
    • 1. record qualitative and quantitative data
  • 7. 5. Conclusion
    • 1. data has value when a valid conclusion can be drawn
    • 2. Theory : a hypothesis supported by many different exp/long period of time
  • 8. Observation  Problem Hypothesis Controlled Experiment Results Conclusion Publication/Theory Reject & Revise Hypothesis Other scientists exp & repeat Additional Hypothesis
  • 9. Example
    • Let’s say you are out fishing. The fish aren’t biting for you, but another guy has them jumping into his boat…
  • 10. Testing…
    • So, you find out what bait he’s using, and you switch to it… <Good>
    • Then you move your boat… <Bad>
      • Why is this bad?