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Scientific Method Notes

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Scientific Method Notes What is your definition of the Scientific Method? You only need to write down those things written in YELLOW. The Scientific Method is An ... – PowerPoint PPT presentation

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Title: Scientific Method Notes


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Scientific Method
Notes
What is your definition of the Scientific Method?
You only need to write down those things written
in YELLOW.
2
The Scientific Method is
  • An organized process to collect information and
    solve problems

3
Ask a question
  • 1A. Make an Observation
  • Observation - What you see, smell, taste, feel or
    hear
  • - Must be factual detailed.
  • - Interpretation - Judgment on an observation

4
1B. Identify the Problem
  • What do you want to know?
  • Why are you doing this?
  • What is wrong?
  • What are you trying to understand?

5
1C. Research your Observations
  • Collect information
  • Find out what other people already know.
  • Can you save some work and time?
  • Has someone else done your experiment before?
  • Can you stop from making the same mistakes
    someone else has already made?
  • Dont forget to list your resources! (GOOGLE is
    NOT a source!)

6
2. Form a Hypothesis
  • A hypothesis is a testable statement.
  • Often called an educated guess, it is a possible
    solution to your problem.
  • It is OKAY if your experiment shows that your
    hypothesis is rejected.

7
3. Design/Conduct an Experiment
  • Your experiment must be testing the hypothesis.
  • All of the parts of the experiment must be in the
    experimental design.
  • The experimental design should be clear enough
    for other scientists to reproduce.

8
  • You may or may not conduct a controlled
    experiment
  • Controlled- Everything is the same except for the
    independent variable.
  • Not controlled- (without experimentation)
  • Field research
  • Human subjects if the control would be
    impractical or unethical

9
  • Parts of a controlled experiment
  • Constants things that are the same in all of the
    groups
  • Independent variable a change the experimenter
    controls
  • Dependent variable changes the scientist
    measures during the experiment
  • Experimental group group that receives the
    independent variable (change)
  • Control group group that is the norm does
    NOT receive the independent variable

10
4. Collect and Analyze Data
  • What kinds of results do you need to record?
  • Quantitative - number data
  • ex. 23 cm, 6 g
  • Qualitative - word data
  • ex. red, smooth

11
Analyze the Results
  • How do you organize you results?
  • - Look at the data. Does it make sense? Did you
    follow your procedure?
  • - Organize it. Table? Graph? Paragraph?
  • Do you see a pattern?

TIP Do you need to do any calculations?
Check your math.
12
5. Draw (make) Conclusions
  • A hypothesis is never proven.
  • Does your data support or reject your
    hypothesis?
  • Support the hypothesis is correct
  • Reject the hypothesis is wrong
  • If your hypothesis was rejected, make a new one
    and start over again.
  • Did anything go wrong?
  • Could your experiment be improved?

13
6. Share Results
  • Reports
  •    Record all of the details of your
    experiment.
  •    If any other scientist follows you
    experiment, they should get the same
    results.
  • Include any new information that was found
    or discovered in your experiment.
  • Include suggestions for improvement or areas
    where your experiment can be improved.
  • _Consider bias. What are some examples of bias
    in a scientific study?
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