Scientific Method Lesson 2

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Scientific MethodLesson 2
Scientist _________________________________
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Do Now

• Put the following on the folder.
• First and last name
• Science
• Period 9

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Do Now

• https//www.youtube.com/watch?vhKoB0MHVBvM
• In one sentence, summarize the video.
• What idea is being put forth in the video?
• If you could ask the two Scientist a question,
  What would it be?

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Essential Question

• How can the scientific method be used to answer
  testable questions?
• __________________________________________________
  __________________________________________________
  __________________________________________________
  __________________________________________________
  __________________________________________________
  __________________________________________________
  __________________________________________________
  __________________________________________________
  ____________________

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Vocabulary

• Scientific method
• testable question
• non-testable question
• hypothesis
• variable
• control group

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Pretest

• What are the steps to the scientific method.
• List them below.

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Steps of the Scientific Method

1. State the problem in the form of a testable
   question.
2. Research and gather information.
3. Form a hypothesis.
4. Perform an experiment.
5. Collect and analyze data.
6. Draw conclusions.

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Do Now

• On the line paper you were given at the door,
• Respond to the following
• If you could do a science experiment of your own,
  what would it be?

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What is the scientific method?

1. It is a simple method scientists use to conduct
   an investigation.
2. It is a way to ask answer scientific questions
   by asking questions conducting experiments.

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1. Question/Problem

• State the problem in the form of a testable
  question.
• Ask a question about something observed.
• Why?
• How?
• What?
• 3. Develop a question that is measurable or that
  can be tested.

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What is a Testable Question?

• A testable question is one that can be answerer
  by designing and conducting an experiment.
• Testable questions are always about changing one
  thing to see what the effect is on another thing.

Testable Question Formats

• Does changing _______ affect _______?
• How does changing _____ affect _____?
• If I change ______ will it affect ______?

independent variable
dependent variable
independent variable
dependent variable
independent variable
dependent variable
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Variables

• A variable is something that can CHANGE.
• Independent Variable The variable that will
  changed by you- the scientist. A good experiment
  only has one independent variable.
• Dependent Variable The variable that is being
  measured in your experiment. The effect or
  outcome to the change you make using the
  independent variable.

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Example Does changing the height of the ramp
affect the speed of the car going down the ramp?
What is the independent variable?
Does changing the height of the ramp affect the
speed of the car going down the ramp?
What is the dependent variable?
Does changing the height of the ramp affect the
speed of the car going down the ramp?
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Another Testable Question

• Does changing the amount of light affect the
  growth rate of plants?

Identify the INDEPENDENT variable Identify the
DEPENDENT variable
Amount of light
Growth rate
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Is this a Testable Question? Why or Why not?

• What makes plants grow best?

How to Turn a General Question into a Testable
Question

• Think of a cause and an effect related to your
  question.
• In this case, the idea is that you can change
  something to affect something about how a plant
  grows.
• Controls are all the factors in your experiment
  that you want
• to remain constant.
• What is the effect of soil type on plant
  height?
• Controls for the plant experiment
• type of plant
• growing conditions (sunlight, temperature, etc.)
• amount of water
• type of container

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2. Research/Gather Information

1. Make observations.
2. Find out as much as you can about the topic.

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3. Hypothesis

• Educated guess about how things work.
• Prediction that can be tested in an experiment.
• Use If, then statements
• If ____ I do this, then _____ this will
  happen
• IMPORTANT- Focus on one variable only.

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4. Experiment

• A carefully designed procedure to test your
  hypothesis.
• Change only one variable at a time.
• Use a control or control group. One group must
  not be changed.
• In order for results to be valid, conduct several
  tests.
• Carefully collect observations and record your
  data in a data table.

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4. Experiment

• Data table.
• Numerical (quantitative) data organized in rows
  and columns
• The specific independent variables are listed
• The number of trials are listed
• Blanks are left for the data (dependent variable)
  to be filled in

Trial Variable 1 Variable 2 Variable 3
1
2
3
4
5
6
AVERAGE
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5. Collect and Analyze Data

• What can your data tell you?
• Create graphs or charts
• a. Graph the data to look for trends
  relationships.
• Use the average and the mean to compare data
  between two groups.

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6. Conclusion

• Summary of your experiment.
• Use your data analysis to decide if your
  observations either support or do not support
  your hypothesis.
• If your data does not support your hypothesis,
  give possible reasons to explain this.
• How could you redesign your experiment with what
  you have learned? How could you improve your
  experiment?

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Discuss

• With a shoulder partner, discuss why scientists
  use the scientific method.

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Scientific Method Song

• https//www.youtube.com/watch?vT8427L0Wry0

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Scientific Method Important Ideas 1. 2. 3. Why are these ideas important? 1. 2. 3.
Which idea is relevant for today? Which idea (from above) interests you the most and why?
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Partner Work

• Bikini Bottom ExperimentBikinibttmlab
  studentpkt-1.pdf

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Performance Task

• You have just been hired by DSL Digital Poster
  Company to design and create a Digital Poster for
  the scientific method. Your Digital Poster must
  include certain components outlined by the
  companys CEO, CEO Lantzy. Using the online
  program Glogster, you will be able to showcase
  your poster making talents and demonstrate your
  understanding of the scientific method.

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Glogster

• Glogster Create and Explore Educational Content
  Online

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Digital Poster Rubric

• Digital Poster Rubric.docx

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Summarization ActivityIN YOUR OWN WORD

• Describe to a neighbor in your own words how the
  scientific method can be used to answer a
  testable question. Write a summary or your
  discussion below.
• __________________________________________________
  __________________________________________________
  __________________________________________________
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  __________________________________________________
  __________________________________________________
  __________________________________________________
  __________________________________________________
  ____________________________________
• __________________________________________________
  __________________________________________________
  ______

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Scientific Method Quiz