Just What Is Science Anyway??? a journey through the scientific method...
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Transcript of Just What Is Science Anyway??? a journey through the scientific method...
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Just What Is Science Anyway???
a journey through the scientific method...
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Scienceis a process of inquiry - asking questions and
getting answers
you do science
There are many sciences: life science
poli-science
social science
etc
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Observation
Before you can ask a question - you need to
make an observation…
2 kinds of Observationsdirect - done w/ the 5 senses
sight, touch, smell, aural, taste
indirect - done w/ equipment thermometer, anemometer, balance...
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The Scientific MethodA very good way to do science
Easy to follow
Repeatable
Thorough
Is the way it’s really done in the field!
Can be applied to any problem.
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What’s the Problem??
You need to state the question that you are going to be collecting data on. This problem is what your project will be
answering.THIS MUST BE IN THE FORM OF A
QUESTION!
The question should not be able to be answered with a yes or no.
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What’s the Purpose??
You need to state the purpose of your investigation - called the Purpose Statement It needs to be clear to you (and the reader) exactly
what you are investigating. Why are you doing the project you picked.
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Hypotheses These are educated guesses - “educated”
implies that the “guesses” are based on research!!! Why do the experiment if someone else already
has??!!??
Should be stated in “I think or I believe” statements
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Procedure You need to list:
- the materials needed for your experiment.
- the steps that you are going to (or did) take to carry out your experiment.
It must be so detailed so that anyone who may dispute your work can reproduce exactly what you did.
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Variables to vary - to change
Independent Variables (IV) - the part of the experiment that you change
Dependent Variables (DV) - the part of the experiment that changes as a result of the manipulation
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more...
Control Group - the part of the experiment that is your basis for comparison
Constants - the parts of your experiment that do not change
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Results - Data Presentation
Data Tables- A simple way to organize
your data. Graphs - To help your data make visual
Sense trends.
Written – Paragraph format
Remember Joe Friday “Just the Facts”
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Conclusions
Three Parts...
Interpretation of DataWhat do all of these numbers mean?
Do they make sense?
Why or why not?
How do the results relate to the topic at hand?
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Conclusions - Continued
Analysis of Hypotheses
did your data support your hypotheses?
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Conclusions – Continued Again
Error Analysis what factors skewed your data?
how wrong is wrong?
Precision vs. Accuracy if your data is accurate it is close to true value
if your data is precise it is consistent from trial to trial
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Precision vs. Accuracy• This is precise but
not accurate
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Precision vs. AccuracyThis is precise and
accurate
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Science Fair Project 1) Pick something that you are interested
about.
2) Know your variables and controls
3) Follow your handout make sure things are handed in on time.
4)Ask if you have a question.