Scientific method notes 2013

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  • If a paper is folded in half, then it can only be folded ________ times because it will become too thick to fold.
  • If a paper is folded in half, then it can only be folded ________ times because it will become too thick to fold.
  • Independent - folding the paper Dependent - how many times it actually is folded
  • We conclude that our hypothesis was supported or not supported based on our data.
  • Scientific method notes 2013

    1. 1. The Scientific Method
    2. 2. `Awareness Test http://youtu.be/Ahg6qcgoay4
    3. 3. What is the Scientific Method? • An organized plan for gathering, organizing and communicating data • The basic steps that scientists follow in uncovering facts and solving scientific problems ( a plan for solving a problem). • Six or Seven Steps - depends on source
    4. 4. What is the Scientific Method? • Make an Observation • Ask a Question • Complete Background Research • Develop a Hypothesis • Test your Hypothesis • Analyze the Data • Conclusion (Report and Share)
    5. 5. Step 1: Observation • Everything starts with an observation • What you perceive with your senses What can you observe about a piece of paper?
    6. 6. Step 2: Forming a Question • Based on your observations • Develop a question or problem that can be solved through experimentation. Can you form a question about paper folding? • Usually a “How’ or “Why” question
    7. 7. Step 2: Forming a Question How many times can you fold a piece of paper in half?
    8. 8. Step 3: Complete Background Research • Collect knowledge needed to know about the subject of the experiment • It will be used to form a hypothesis
    9. 9. Step 4: Develop a Hypothesis • Hypothesis = an educated prediction to the answer of the stated problem • Based on research and prior knowledge Not a W.U.G. ! (Wild Uneducated Guess)
    10. 10. Step 4: Develop a Hypothesis • A proposed answer to your question • There is no right or wrong hypothesis Using our question lets develop a hypothesis.
    11. 11. Format of Hypothesis • Two accepted formats: “I think…because…” Or “If…then…because…” • Both formats include the all important “because statement” used to justify your prediction.
    12. 12. Examples of Format of Hypothesis “I think…because…” I think a paper can be folded in half __ times, because after that it is too thick to fold “If…then…because…” If a paper is folded in half, then it can only be folded ________ times because it will become too thick to fold.
    13. 13. Step 5: Testing Your Hypothesis • This is where you conduct an experiment (a situation specially set up to observe how something happens or to test your hypothesis) • Develop a set of repeatable methods • The goal is to test your hypothesis by collecting data
    14. 14. Step 5: Testing Your Hypothesis • Includes variables - a quantity that is measured or changed during the experiment Term Definition Independent Variable What you are changing in the experiment Dependent Variable The outcome caused by changing the independent variable, a measurement Control Used for comparison in your experiment Constant What stays the same from one experiment to the next
    15. 15. Step 6: Testing Your Hypothesis What are our variables in the paper folding experiment? independent variable cause dependent variable effect control comparison constant unchanging folding thepaper how many times it actually is folded
    16. 16. Step 6: Collect and Analyze the Data • Interpret the data you gathered from your experiment • Observations, information and data are collected from the experiment • Organize the data and perform calculations
    17. 17. Step 6: Collect and Analyze the Data • Construct charts, graphs, averages, percentages, etc. Dependent Variable on the Y-axis Independent Variable on the X-axis How would you graph the paper folding experiment?
    18. 18. Step 7: Conclusion • Does your data support your hypothesis? You just made a scientific discovery. YES Revise or make a new hypothesis and test again. NO
    19. 19. Step 6: Conclusion (Sharing) • A summary of results, the answer to your question. • What were the possible sources of error? • Does your data (answer) support your hypothesis? Why or why not? What conclusion can you make about paper folding? We conclude that our hypothesis was supported or not supported based on our data.
    20. 20. What about a huge sheet of paper? http://www.youtube.com/watch?v=kRAEBbotuIE&feature=share&list=TLWRT4dnDchcU
    21. 21. Why use the Scientific Method? • A logical way to problem solve - in all aspects of life. • A way to share information that can be proved or disproved. • A way to find new information

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