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Biology The Living Environment
Mr. Mac
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What is Biology/Life Science?
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What is Biology/Life Science?
The study of all living things
Ex. You, your pet rat, a tree, a mushroom
Living things both large and small
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Scientists Study Biology Through….
Observation Critical thinking Experimentation Evaluation Analysis Patience
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Scientific Method: Steps to problem solving Universal
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Steps to Scientific Method Identifying the problem Observation/ gather informatin Hypothesis Experimentation Analysis Conclusion
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Observation
Vs
Inference
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Observation
Vs.
Inference
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Observation
Vs.
Inference
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Step 1 Identify the Problem
Observe something interesting, and wonder…Hmmm
Define the problem Determine what you are researching
Images from http://www.inmagine.com/searchterms/thinking-4.html
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Step 2 Gather Information
Gain as much information as possible Through observations
senses
1. sight
2. sound
3. taste
4. touch
5. Smell
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Step 3 Hypothesis
An “educated guess” about the problem, or better, a TESTABLE explanation.
Always written as an “if…then” statement Ex.
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Step 4 Design an Experiment:
To test the hypothesis
Examine all factors that could change in the experiment
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Factors to consider during an Experiment Include:
independent variable – the thing in the experiment that causes the change
dependent variable - the thing in the experiment that changes
Control – the thing that remains unchanged or is considered the “normal” part in the experiment
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Step 5 Record/Analyze data
Create graphs, charts, and/or tables, that record information collected in the experiment
Form an Inference – type of conclusion based on the collected data
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Step 6 State a Conclusion
A written statement that reflects the outcome of the data collected in the experiment
States whether the data agrees (supports) or disagrees (refutes) with the HYPOTHESIS
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Does miracle grow really make plants grow faster?
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DATA
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More ways to represent DATA
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Put the following steps of the scientific method in the correct order
a. Make a conclusion
b. Pick your topic
c. Conduct your experiment
d. Make your hypothesis
e. Analyze your data
f. Research your topic
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An experiment is being done to determine how light affects the growth small zinnia plants. One plant is placed in full sunlight, the second in a shaded area, the third in an unlit closet. What is the independent variable in the experiment?
A. Type of plant B. Amount of SunlightC. Type of SoilD. Length of Experiment