Welcome back!

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Welcome back!

• 1. Please put your name sign on your desk.
• 2. Please pass the signed safety contract and
  survey consent form to the front of your row.
• 3. Please make sure your name is on your Frayer
  model and pass that to the front of your row.
• 4. Please read the board.
• Thanks!

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Class Systems

• Our standards for success focus and respect.
• Regroup signal
• Objective Sheets

Focus its a good thing.
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The great tragedy of science the slaying of a
beautiful hypothesis by an ugly fact. -
Thomas Huxley

• What does this statement mean to you?

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Observation Inference
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Observations

• Any information collected with the senses.
• Quantitative measureable or countable
• 3 meters long
• 4 marbles
• 50 kilograms
• 35 degrees Celsius
• Qualitative describable, not measureable
• red flowers
• smells like fresh baked cookies
• Tastes bitter
• Heard a loud pop
• The skill of describing scientific events

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Inference

• Conclusions or deductions based on observations.
• The process of drawing a conclusion from given
  evidence.
• Practice
• Observations
• I see a student take a big bite of a burger
• I see the student spit the bite out
• Inference ?

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Scientists need to separate observations from
inferences

• As you look at the image on the next slide, write
  three observations on your board.
• Try not to write an inference!

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Look at this illustration. On your board, list 3
OBSERVATIONS On your board, make two INFERENCES
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Explain the difference again?!

• Observations

• Inferences

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Now lets use more realistic examples
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Sources UN Population Division and Population
Reference Bureau.
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What you didnt know about your bottled water
Before its news www.beforeitsnews.com 6/12/13
accessed 8/27/13
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Summarize what you learned

• What is the difference between an observation and
  an inference?
• Why is it important that scientists separate the
  two? (Or, why would it be bad if scientists moved
  too quickly to an inference?)
• The great tragedy of science
  the slaying of a beautiful
  hypothesis by an ugly
  fact. - Thomas Huxley

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Homework tonight?