method of presenting experiment for form 6
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Program VENI-VIDI-VICI
Hand-on Experiment
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Title of the Experiment
Choose a title that reflects your topic
Usually is in the form a `Question?What problem are you trying to solve
or/answer?
Example: How does caffeine affect the growthof a plant?
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Purpose or aims
Write 1 to 3 sentences describing what you
want to find out in this experiment.
Example: The purpose of this experiment is to find out
if a pea plant will grow taller when given caffeine
rather than water.
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Research
Develop 3 questions that you want to answer about yourtopic.
Try to use various sources for your research.
Suggested sources:
Books
Magazines
Newspapers
Internet
Research should be designed to get
background information about your topic,
before you begin your experiment.
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Hypothesis
Make your guess
Once you have done some research, you will need
to come up with a hypothesis. Use your research to make an educated guess about
how you think your experiment will turn out.
Use the If the amount of __________ is (increased or decreased) then
I think ________will (increase or decrease). format
Example: If I pour 100ml of coffee on four pea plants and pour 100ml ofwater in another four pea plants, then I think the plants with coffee will
grow taller because caffeine will stimulate the plants.
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Materials
Make a complete list of everythingyou will use in your experiment.
Tell how many and how much of
each object used.
Use metric measures only.
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Apparatus
Make a complete list of equipment andglassware used in the experiment.
Sketch the diagram or layout of the
experiment
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Procedure
Design your experiment Design your experiment so that they only test for one thing.
Make sure that you do the same things to all groups of objects beingtested.
Example: If you are testing plants:
Use the same seeds.
Plant all of them with the same soil.
Put them all in the same amount of light for the same amount of time.
The only thing that should be different about the plants is that one
received coffee and the other water.
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Procedure
To increase the validity of your experiment
Make sure to keep a control group. Keep in mind sample size.
The more objects in your sample the more valid your
experiment.
Use multiple trials. (At least three.)
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Procedure
Write down step-by-step directions on how
to do your experiment. Do not leave anything out!
Example
Given in the next slide
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Example:
1. Get 8 pea plants ( 100 cm tall).
2. Place 4 pea plants on each tray.
3. Label one set of plants Caffeine.
4. Label the second set Water.
5. Pour 100ml of coffee( with caffeine ) onto the soil of each
plant twice a week.
6. Pour 100ml of water onto the soil of each plant twice a
week.
7. Measure each plant with a metric ruler
8. Record data in record book.
Procedure
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Do and Observe
your experiment.What are your variables?
Independent Variable (the thing you change): (X )
Dependent Variable (data you collect) (Y)Constants
What will you keep the same throughout the
experiment (C)
Record all your observations if there are changes with regard to
the variable parameters concerned: ie: temp, time, activity, amount,
colour, viscosity, density, intensity etc
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Make Charts and Graphs
Display data using charts, tables, and graphs.
Use the Graph Club or Inspiration program. Choose the correct graphs for your data.
Bar-comparison
Pie-percentage Line-change/time
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Results and Discussion
Using your data write a few sentences how yourexperiment turned out.
Example:
From reading my charts and graphs, I know that PlantGroup #1 grew an average of 40cm with 100ml of coffee.
Plant Group #2 grew and average of 20cm with 100ml of
water. The Plant Group that was given coffee grew 20cmmore on the average than the Plant Group that was givenwater.
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Conclusion
Write down why you think your experiment turned
out the way it did, include if your hypothesis was
supported or not.
Be sure to use the term My hypothesis was/was not
supported.
Do not say I was right/wrong.
Even when your hypothesis was not supported you gain
information about your topic.
Use scientific reasoning for conclusion.
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Conclusion
Example:
My hypothesis was supported. The plants that werewatered with coffee ( caffeine ) grew taller than those
that were given water. Therefore, caffeine has a positive
effect on the growth of pea plants. This may be due the
fact that caffeine is a stimulant. The caffeine could have
stimulated the plant to grow.
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Future Considerations
Tell what variable you would change if you
could do the experiment again. Tell how you might take your experiment to
the next step.
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Future Considerations
Example
If I could do this experiment again , the variable I
would change would be the amount of caffeine I wouldplace in each plant group. I would use 50ml for plant
group #1, 100ml for plant group #2, and 150ml for plant
group #3. I would also have three control groups of
plants. One would get 50ml of water. One would get100ml of water. And one would get 150ml of water. I
want to see which amount of caffeine helps plants grow
the tallest.
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