Presentation Notes - The Scientific Method of Lab...
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Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 1
The Scientific Method of Lab Investigation
Food Science
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 2
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Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 3
What is Science?
This vast body of changing and increasing knowledge is described by physical, mathematical and
conceptual models
as well as the knowledge generated
through this process
The use of evidence to construct
testable explanations and
predictions of natural phenomena
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Defined by the National Academy of Sciences.
Students should know that some questions are outside the realm of science
because they deal with phenomena that are not scientifically testable.
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 4
The Scientific MethodA system of steps used to investigate,
answer questions and solve problems
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Provide examples of food science questions such as:
• Why do bacteria grow on food at certain temperatures?
• Why do bananas turn brown?
• Why do oil and vinegar not mix?
Randomly select students to provide additional questions.
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 5
Scientific Method Steps
1. Question
2. Hypothesis
3. Experiment
4. Analyze Data
5. Conclusions
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There are several different steps to the scientific method. We will be using the
five step model.
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 6
Step 1 – Question• Identify the problem
• State it clearly as a question
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Develop a question or problem that can be solved through experimentation. Good questions come from careful observations. • How? • What? • When? • Where? • Who? • Why?
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 7
Step 2 - Hypothesis• Predict a possible answer
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A hypothesis is an educated guess based on available evidence.
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 8
Step 3 - Experiment• Test the hypothesis
• Develop and follow a procedure
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Carry out the experiment following the procedures.
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 9
Analyze Data
• Evaluate the information
• Include charts, diagrams or graphs
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Review the information and check the data to be able to see if your hypothesis
was answered.
Sometimes, other questions are created and you may need to go back to a
step.
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 10
Step 5 - Conclusions• Report your results
• Share with your classmates
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The report may be an oral report, a written report or a presentation.
It should be shared the class.
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 11
The Scientific Method: Steps, Terms and Examples
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(click on image for video)
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Click on image from YouTube™ video:
The Scientific Method: Steps, Terms and Examples
In order to gain knowledge about the world however the steps involved in the
scientific method vary widely among the different scientific disciplines
http://youtu.be/BVfI1wat2y8
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 12
Organizing DataCharts, Diagrams and Graphs
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Discuss that data should be clear and informative.
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
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Slide 13
Charts• Used to:
detail steps in a procedure
list explanation of terms
show rank order
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Various types of charts can illustrate the data.
Microsoft™ Chart can be used to create charts.
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 14
Diagrams• Used to show:
comparisons
deductive reasoning
relationships
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Diagrams can compare and contrast information.
Graphic organizers can be used as well.
Microsoft™ SmartArt can be used to create graphic organizers.
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 15
Graphs• Used to show:
relationship of a variable to one or more other variables
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Different types of graphs can make the data more meaningful.
Microsoft™ Charts can be used to create graphs.
Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 16
Questions?
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Presentation Notes The Scientific Method of Lab Investigation
The Scientific Method of Lab Investigation
Copyright © Texas Education Agency, 2015. All rights reserved.
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Slide 17
References and ResourcesImages:
• Shutterstock™ images. Photos obtained with subscription. (Slides 1, 4, 5, 6, 7, 8, 9, 10, 11,
15)
Textbook(s):
• Mehas, K. Y., & Rodgers, S. L. (2002). Food science: The biochemistry of food and nutrition.
New York, NY: Glencoe/McGraw-Hill.
• Ward, J. D., & Ward, L. T. (2013). Principles of food science. Tinley Park, IL: Goodheart-
Willcox Company.
YouTube™:
• Science Style (Gangnam Style Parody/Piggyback)
Piggyback song to teach the scientific method using "Gangnam Style" by PSY.
http://youtu.be/MyFi6BQfDik
• The Scientific Method: Steps, Terms and Examples
In order to gain knowledge about the world however the steps involved in the
scientific method vary widely among the different scientific disciplines
http://youtu.be/BVfI1wat2y8
17Copyright © Texas Education Agency, 2015. All rights reserved.