scientific method ms. maldonado 4 th grade science
TRANSCRIPT
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Scientific MethodMs. Maldonado
4th grade Science
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Scientific Method
• The scientific method is an organized plan for gathering, organizing, and communicating information.
• The goal of any scientific method is to solve a problem or to better understand an observed event.
• Scientist perform experiments to test their hypothesis.
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Scientific Method
• Problem/Question
• Research
• Formulate a Hypothesis
• Experiment
• Collect and Analyze Results
• Conclusion
• Communicate the Results
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Steps of the Scientific Method
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Making a Question
• After evaluating your observations, ask a question. What do you want to find out? State the problem as a question. Make the question as specific as possible.
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ResearchResearch
Make observations and research your topic of interest.
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Hypothesis
• Formulate a Hypothesis: Predict a possible answer to the problem or question.
• A hypothesis is an educated guess at the possible answer to the question.
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Experiment
• Develop and follow a procedure.
• Include a detailed materials list.
The outcome must be measurable (quantifiable).
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Collect and Analyze data/Results
• Modify the procedure if needed.
• Confirm the results by retesting.
• Include tables, graphs, and photographs.
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Collect and Analyze Data
• Evaluate – Do you see any trends or patterns in the data? Do the data support your hypothesis or prediction? Do you need more information?
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Draw Conclusion:
• Include a statement that accepts or rejects the hypothesis.
• Make recommendations for further study and possible improvements to the procedure.
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Drawing a Conclusion
• State your conclusion based on your data. Your data should either support your conclusion or lead you to another hypothesis. Have any new questions or problems come up?
• .
Step_Five__Draw_a_Conclusion
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Communicate the Results:
• Be prepared to present the project to an audience.
• Expect questions from the audience.
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Presentation of Data
• Information obtain from observation can be presented in a variety of forms to make it easier for the viewer to obtain facts quickly.
• Graphs and charts present are some ways to organize and present data.
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Observation
• 1. Observation – is information you obtain with your senses.
• What do you see?
• What do you hear?
• What do you smell?
• What do you feel?
• What do you taste?
observation
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What you see
• The most direct way to gain knowledge about something in nature is to observe it.
• Your ability to observe can be extended by using tools such as microscopes, telescopes, thermometers, and rulers.
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What you smell• Many times scientists
can identify the presence of a chemical, bacteria, or plant by its scent.
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Can you identify the smell in the containers?
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Touch and Feel
Texture –rough or smooth
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Taste• Determining concentration through taste
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What do you hear?
• Scientist record sounds of animals to determine how species communicate with each other.
• Sounds• Sounds
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Components of an Experiment
• Variable – in an experiment any factor that can change is called a variable.
• Manipulated Variable – the variable that causes a change in another.
• Responding Variable – the variable that changes in response to the manipulated variable.
• Control Experiment – has two test groups- the control group and the experimental group. The control group is the standard by which any change can be measured.
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Vocabulary
• Constant – The factors that are kept the same.
• Variable – The factor that is changed by the person doing the experiment
• Investigative tools
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Researching an Experiment• List the materials necessary to conduct the
experiment
• Design the steps and procedures for the experiment.
• Design how data will be collected.