0104 nature of science gff_online


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0104 nature of science gff_online

  1. 1. Nature of Science Review after the Great Fossil Find (GFF)
  2. 2. Old School <ul><li>You might remember the old scientific method </li></ul><ul><ul><li>It’s not obsolete…it’s just used in a different way </li></ul></ul><ul><li>What is the scientific method you remember? </li></ul>
  3. 3. Roughly it can be listed as <ul><li>Ask a Question </li></ul><ul><li>Do Background Research </li></ul><ul><li>Construct a Hypothesis </li></ul><ul><li>Test Your Hypothesis by Doing an Experiment </li></ul><ul><li>Analyze Your Data </li></ul><ul><ul><li>Repeat all steps again if necessary </li></ul></ul><ul><li>Draw a Conclusion </li></ul><ul><li>Communicate Your Results </li></ul>From: http://www.sciencebuddies.org/science-fair-projects/project_scientific_method.shtml
  4. 4. Ask a Question:   <ul><li>Ask a question about something that you observe: How, What, When, Who, Which, Why, or Where? </li></ul><ul><li>Your question must be about the natural world and something you can measure, preferably with a number. </li></ul><ul><li>What part of your GFF would be considered your question? </li></ul>
  5. 5. Do Background Research:   <ul><li>Rather than starting from scratch in putting together a plan for answering your question, you want to be a savvy scientist using library, textbooks, journal articles, and Internet research to help you find the best way to do things and insure that you don't repeat mistakes from the past </li></ul><ul><li>What part of your GFF would be considered background research? </li></ul>
  6. 6. Construct a Hypothesis:   <ul><li>A hypothesis is an educated guess about how things work: &quot;If _____ [I do this]  _____, then _____ [this] _____ will happen because ____[reasoning]____.&quot; You must state your hypothesis in a way that you can easily measure, and of course, your hypothesis should be constructed in a way to help you answer your original question </li></ul><ul><li>What part of your GFF would be considered a hypothesis? </li></ul>
  7. 7. Variables : <ul><li>Independent : What you are changing </li></ul><ul><li>Dependent : What you are measuring (as a result of the changing independent variable) </li></ul><ul><li>Constants : What stays the same between each level so the ONLY thing changing is the independent variable </li></ul><ul><li>Control : The level to which no change is added – not always present </li></ul>
  8. 8. Test Your Hypothesis by Doing an Experiment:   <ul><li>Your experiment tests whether your hypothesis is true or false. </li></ul><ul><ul><li>It is important for your experiment to be a fair test. You conduct a fair test by making sure that you change only one factor at a time while keeping all other conditions the same. </li></ul></ul><ul><li>You should also repeat your experiments several times to make sure that the first results weren't just an accident. </li></ul><ul><li>What did this look like in GFF? </li></ul>
  9. 9. Analyze Your Data and Draw a Conclusion:   <ul><li>Once your experiment is complete, you collect your measurements and analyze them to see if your hypothesis is true or false. </li></ul><ul><ul><li>Scientists often find that their hypothesis was false, and in such cases they will construct a new hypothesis starting the entire process of the scientific method over again . </li></ul></ul><ul><ul><li>Even if they find that their hypothesis was true, they may want to test it again in a new way </li></ul></ul><ul><li>What did this look like in GFF? </li></ul>
  10. 11. Communicate Your Results: <ul><li> In a final report, presentation, poster, etc. </li></ul><ul><li>Professional scientists do almost exactly the same thing by publishing their final report in a scientific journal or by presenting their results on a poster at a scientific meeting </li></ul><ul><li>How was this done in GFF? </li></ul>