Developing a Hypothesis and Title for your Experiment
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  • i like that hypothesis much better ..
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  • talks about the scientific method, hypothesis. Dependent, independent varibles etc.
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  • This slide show was a real find! Thank you so much. I am working with 9th grade students this year and developing their understanding of the Science Fair process. This fit right into the chunk of what comes after developing your research question.
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Developing a Hypothesis and Title for your Experiment Developing a Hypothesis and Title for your Experiment Presentation Transcript

  • Developing a Hypothesis and Title for your Experiment Based on slides from “Blueprints for Science” Summer Institute
  • Scientific Method
      • Formulate a question.
      • Research the question.
      • Form a hypothesis.
      • Conduct an experiment to test your hypothesis.
      • Analyze data.
      • Draw Conclusions.
      • Communicate results.
  • The Hypothesis is the foundation of the experiment!
    • The development of a hypothesis is the first step in designing and conducting an experiment.
    • The hypothesis should be clear, specific, and testable .
  • The Hypothesis …
    • Is the prediction for the outcome of the experiment.
    • States the relationship between the independent and dependent variable! Remember…you are always testing to see if the Independent Variable has an effect on the Dependent Variable.
  • The Hypothesis …
    • Is written in the following format: “If the (Independent Variable) is (describe change) , then the (Dependent Variable) will (describe change) .”
    • You must always use this “If…then…” statement which stating your hypothesis because is states the relationship between the IV and the DV!
  • Here’s a scenario for you:
    • Mr. Ponticelli tested to see if the amount of TV had an effect on how many times his baby woke up during the night!
    • He let JJ watch 1 hr, 2 hrs, 3 hrs, and 4 hrs of TV.
  • Here’s a scenario for you:
    • IV: TV time (1 hr, 2 hr, 3 hr, 4 hr)
    • DV: How many times his baby woke up during the night
    • HYPOTHESIS: If the (amount of TV time) is (increased) , then the (amount of times the baby wakes up during the night) will (increase) .
  • Here’s a scenario for you:
    • HYPOTHESIS: If the (amount of TV time) is (increased) , then the (amount of times the baby wakes up during the night) will (increase) .
    • This hypothesis states the relationship between the amount of TV time (IV) and the # of times the baby wakes up (DV).
  • The Title of your Experiment
    • Like your Hypothesis, the title of your experiment also has a specific format you must use.
    • It also shows the relationship between the IV and the DV.
  • The Title of your Experiment…
    • Is written in the following format:
    • “ The Effect of (Independent Variable) on the (Dependent Variable) .”
    • Remember, in your experiment, you are looking to see if the IV has an effect on the DV.
  • The Title of your Experiment…
    • Using the last example:
    • “ The Effect of (the Amount of TV Time) on the (Number of Times the Baby Wakes Up During the Night) .”
    • Remember, in your experiment, you are looking to see if the IV has an effect on the DV.
  • E ffect vs A ffect
    • “ Effect” and “Affect” are great words to use when writing Titles and Hypotheses.
    • What’s the difference?
  • E ffect vs A ffect
    • E ffect is a noun.
    • It refers to the outcome of an experiment.
    • It is ALWAYS used when writing Titles.
    • A ffect is a verb.
    • It means “to influence or act upon something.”
  • Ready for some practice?
    • Take out your Experimental Design sheet with the vocabulary words.
    • Clear everything else off your desk.
    • Get a mini whiteboard, marker, and “eraser.”
  • SHOW ME YOUR ANSWER!
    • Each group must give each student in the group a specific number of 1-4.
    • I will put a scenario up on the screen.
    • Each group will discuss the scenario with each other and identify your variables.
    • I will then call out a student number and a question for you to answer. That student must write down the answer though the teammates can help.
    • When I say “Show me your answer,” hold up your white board for me to see.
  • Think about the following scenarios…
    • Scenario #1:
    • Billy Bob set up an experiment to see if the amount of sleep affects the reading scores of 4 th graders.
  • Here we go!
    • Scenario #2:
    • Davey Jones has seen all those commercials that say “Tag” body spray attracts girls.
    • He decided to test if the amount of body spray has an effect on how many girls approached him over the course of the school day.
  • Here we go!
    • Scenario #3:
    • Sidney Crosby set up an experiment to determine if the weight of a hockey puck has an effect on the speed of his slapshot. He measured his shot in mph.
  • Here we go!
    • Scenario #4:
    • Dr. Sawyer set up an experiment to see if the amount of time students spend on homework each night has an effect on their Science MCAS score.
  • Here we go!
    • Good job!