Does Fertilizer Matter

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Does Fertilizer Matter?

• Mrs. Lees experiment

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Observation Some of my roses are growing taller
than others
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What I know

• The rose bed beside the road had cow manure added
  to it last fall.
  
• The roses near the house were sprayed with Lowes
  Grow Crazy last month.
  
• The roses by the patio had Wal-Mart Nitrogrow
  sprinkled around them in May.
  
• The roses by the tree have been left alone all
  season.

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Hypothesis

• The type of fertilizer applied to roses will
  affect how tall they grow.
  
• The application of Grow Crazy from Lowes will
  cause my roses to grow tallest.

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Experiment
Buy 4 identical rose bushes
Plant the roses in identical pots
Each rose will get 14 hours of sunlight a day
Each rose will get 1 quart of water every other
day
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Experiment

• Allow the plants to grow for 6 months, measuring
  the height of the roses on the 23rd of each month.

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Data Collected
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Graph of collected Data
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Conclusion

• Did the Grow Crazy from Lowes cause the roses to
  grow taller?

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Conclusion

• No, the Grow Crazy from Lowes did not cause my
  roses to grow tallest.
  
• The cow manure caused my plants to grow tallest.

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What do I do now?
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What is the variable?

• The fertilizer is the independent variable
• The growth of the roses is the dependent variable

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What is the Control Group?

• The control group is the rose bush that has no
  fertilizer because I made no changes to it.

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What are some constants?

• The amount of water
• The type of pot
• The amount of sun
• The time to grow
• The type of soil

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Think of a problem you have observed. Write a
hypothesis that would solve the problem. Design
an experiment that would test the hypothesis. Do
not do the experiment! Identify the constant, the
variable, and the control group for your
experiment.