what is your objective? the problem curiosity???????? ???????? observation is a key element here!!!
TRANSCRIPT
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What is your Objective? THE PROBLEM
Curiosity????????????????
Observation is a key element here!!!
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RESEARCH
• Gather Information
• Get some Background about the topic
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THE HYPOTHESIS
• What is a HYPOTHESIS?
• They can never be completely proven…..but one single experiment can disprove it.
IT IS A PREDICTION!! A POSSIBLE EXPLANATION FOR THE OBSERVED SET OF FACTS in the form of a statement.
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Time to Experiment!!!
• Plan the design of your Experiment.
• Consider the following………
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Is it a Controlled Experiment or Field Experiment??
• Both Types will have Variables that need to be looked at.
• Independent Variable• Dependent Variable• Control group• Constants
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DEPENDENT VARIABLE (Responding Variable)
• The One You Measure as a result of the changing Independent variable (the data)
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INDEPENDENT VARIABLE (Manipulated Variable)
• The one you will vary to see how it may affect the dependent variable
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To do a Fair Test (Controlled Experiment) and Obtain a Valid Conclusion you need to………
• KEEP ALL VARIABLES CONSTANT, EXCEPT FOR THE INDEPENDENT VARIABLE.
• Examples: amount of sunlight, species of plant, amount of water
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OTHER FACTORS TO CONSIDER WHEN
EXPERIMENTING…….
• How many individuals will you test?
• How many trials?
• What outside environmental factors do you need to keep constant?
• Safety precautions.
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Conduct the Experiment
• A Experimental Group will be the group with the Independent Variable:
• In this example, the plants receiving the fertilizer.
• A Control Group will be the group without the Independent Variable
• In this example, the plants receiving water only
• A control group is for comparison.
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GATHERING DATA
• Make a data table
• Label the sections of your table.
• Always put in the correct units given or being used
# of Days
Height of First Plant
Height of Second Plant
1 5 cm 3cm
2 8cm 7 cm
3 16cm 12 cm
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RESULTS
The effect of Gibberelin on plant growth
0
5
10
15
20
Days
Hei
ght
(cm
) Plant withGibberelin
PlantwithoutGibberelin
• Always Title graph and label the X and Y axis.
• What are the Independent and Dependent Variables in this experiment?
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• Accept or Reject your Hypothesis (Meaning: was your hypothesis supported?)
• What were the sources of error?
• What patterns did you observe?
WHAT WOULD YOU PUT IN YOUR CONCLUSION?
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NOW WHAT????
REPEAT, REPEAT, REPEAT!!!!!
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What else do you have to add to the Scientific Method to make it a Lab
Report???• The Parts of a Lab Report are:• Title• Hypothesis• Problem (Question to test)• Materials• Procedure (Methods used)• Data• Results (Graph)• Discussion and Conclusions