Aug. 16 2011 (scientific method)


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Aug. 16 2011 (scientific method)

  1. 1. Biology I Mr. Nettles
  2. 2. Agenda- Tuesday, August 16, 2011 <ul><li>1. Warm Up– 5 min </li></ul><ul><li>2. “Steps of the Scientific Method” – 40 min </li></ul><ul><li>3. Wrap Up– 5 minutes </li></ul>
  3. 3. Warm Up <ul><li>What does biology formerly mean? </li></ul><ul><li>Give another definition in your own words. </li></ul><ul><li>Using at least three sentences, describe some aspect of biology that you saw on your way to school this morning. </li></ul>
  4. 4. Today’s Objectives <ul><li>I will understand the steps involved in the scientific method. </li></ul><ul><li>I will understand the meanings of the vocabulary terms quantitative and qualitative. </li></ul>
  5. 5. Steps of the Scientific Method
  6. 6. <ul><li>The Scientific Method is a series of steps that scientists agree are a logical way to perform an experiment. </li></ul>
  7. 7. <ul><li>We shall take a closer look at these steps and the terminology you will need to understand before you start a science project. </li></ul>
  8. 8. <ul><li>State the Problem or Question </li></ul><ul><li>Make Observations or Do Research </li></ul><ul><li>Form a Hypothesis </li></ul><ul><li>Test your Hypothesis or Experiment </li></ul><ul><li>Collect and Analyze Results </li></ul><ul><li>State your Conclusion </li></ul><ul><li>Communicate the Results </li></ul>Scientific Method
  9. 9. Steps of the Scientific Method <ul><li>1. State the Problem : Develop a question or problem that can be solved through experimentation. </li></ul>
  10. 10. Steps of the Scientific Method <ul><li>2. Make Observations or Do Research : Get information. Gather the “411”. </li></ul>
  11. 11. Key Point 1 <ul><li>Observations are made with your five senses: sight, taste, hear, touch, smell. </li></ul><ul><li>Observations are Quantitative if they use numbers and Qualitative if they use descriptions. </li></ul><ul><li>Observations are made while you are gathering information </li></ul>
  12. 12. Critical Thinking Example <ul><li>PROBLEM: Why are students always late to class? </li></ul><ul><li>What is a quantitative observation for this situation? </li></ul><ul><li>What is a qualitative observation for this situation? </li></ul>
  13. 13. Steps of the Scientific Method <ul><li>3. Form a Hypothesis : Predict a possible answer to the problem or question. This is usually written as a statement. </li></ul><ul><li>Example: If soil temperatures rise, then plant growth will increase. </li></ul>
  14. 14. Steps of the Scientific Method <ul><li>4. Test you Hypothesis or Experiment : Develop and follow a procedure to test your hypothesis . </li></ul><ul><li>Include a detailed materials list. </li></ul><ul><li>The outcome must be measurable (quantifiable). </li></ul>
  15. 15. Steps of the Scientific Method <ul><li>5. Collect and Analyze Results : Modify the procedure if needed. </li></ul><ul><li>Confirm the results by retesting. </li></ul><ul><li>Include tables, graphs, and photographs. </li></ul>
  16. 16. Steps of the Scientific Method <ul><li>6. State your Conclusion : Include a statement that accepts or rejects the hypothesis. </li></ul><ul><li>Make recommendations for further study and possible improvements to the procedure. </li></ul>
  17. 17. Steps of the Scientific Method <ul><li>7. Communicate the Results : Be prepared to present the project to an audience. </li></ul><ul><li>Expect questions from the audience. </li></ul>
  18. 18. <ul><li>Let’s put our knowledge of the Scientific Method to a realistic example that includes some of the terms you’ll need to use and understand. </li></ul>
  19. 19. SHOULD MY FRIEND DATE TAYLOR SWIFT? <ul><li>Using the Scientific Method… </li></ul><ul><li>What’s the first step? </li></ul>
  20. 20. Step 1: State the Problem or Question! <ul><li>Should my friend date Taylor Swift? </li></ul><ul><li>Next step? </li></ul>
  21. 21. Step 2: Make Observations or Do Research <ul><li>PROS: </li></ul><ul><li>Pretty </li></ul><ul><li>Has a lot of money </li></ul><ul><li>Grammy-award winning artist </li></ul><ul><li>Lives in Nashville </li></ul><ul><li>CONS: </li></ul><ul><li>May be in a relationship </li></ul><ul><li>She may think he is stalker </li></ul>
  22. 22. Step 3: Write a hypothesis. <ul><li>If my friend dates Taylor Swift, then he will be happier! (and so will she)  </li></ul>
  23. 23. Step 4: Test your Hypothesis or Experiment <ul><li>Independent Variable: Dating Taylor </li></ul><ul><li>Dependent Variable: How much happier my friend gets than if he didn’t date her </li></ul><ul><li>Control: Not going on a date with Taylor </li></ul><ul><li>Variable: Date with Taylor </li></ul>
  24. 24. Step 5: Collect and Analyze Results <ul><li>Measure his happiness from the control. (No date with Taylor) </li></ul><ul><li>Measure his happiness from the variable. (Date with Taylor doing the same thing he was doing alone) </li></ul><ul><li>Compare happiness. </li></ul>
  25. 25. Step 6: State your conclusion. <ul><li>If my friend dates Taylor Swift then he will be happier! (and so will she) </li></ul><ul><li>CONFIRMED! </li></ul>
  26. 26. Step 7: Communicate the Results <ul><li>BRAG about your date with Taylor Swift to your friends! </li></ul>
  27. 27. Wrap-Up Activity <ul><li>What are the 7 steps of the scientific method? </li></ul><ul><li>What is a quantitative observation? </li></ul><ul><li>What is a qualitative observation? </li></ul>