Science II Change over time

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Science IIChange over time

• Ms. Sherwood

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Where do I sit?

• Sit at the table number that matches the number
  on the front cover of your science notebook.
• Write your name on the post it note for your
  period

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What is Science?

• Write your own definition in your science
  notebook.
• Discuss your responses with others at your table.
  Be ready to share.
• Knowledge about the world obtained through
• Research
• Observation
• Investigation
• Experimentation

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What is it to study science?

• Learn about science discoveries made by others

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What is it to do science?

• Research existing knowledge
• Explore and make observations
• Design experiments to gain additional knowledge

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Describe the difference between.

• An exploration, investigation and experimentation
• Write a definition for each in your notebook. Be
  prepared to share your thinking.

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Now lets see how it works

• We have just discovered an unusual substance
  growing in a petri dish.
• It looks kind of slimy, but very cool, so we want
  to learn more.
• Is it an intelligent life form? What does it
  eat? Where does it like to live?

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What does it eat?
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Why does it change appearance?
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What is it doing?
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Is it intelligent?
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Your mission for today.

• Each table will have a different food source to
  explore
• Work in groups of 2 or 3
• Decide how you want to set up your petri dish to
  learn more about how the organism responds?
• Draw a picture of your test petri dish. Be sure
  to label everything.

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Make a prediction

• What do you think your petri dish will look like
  tomorrow?

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Find your petri dish

• Record your observations
• Prepare to tell the class what you learned

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What else can you observe?

• You may use the microscope or hand lens
• Record any additional observations or new
  understandings you have about the organism

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Gather Additional Information

• In your text book Find the definitions for the
  following
• Cell
• Nucleus
• Cytoplasm

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What questions do you have?

• Record several questions that you have about this
  organism
• Write one question on each post-it note

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Separate your Questions

• Separate your questions into two stacks
• One with questions that you could actually
  investigate
• One stack with questions that are not
  investigatable

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Review your questions

• Share one investigatable question with the class

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Think about it

• What makes a question investigatable?

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Select one question

• Record the question that you would like to
  investigate
• Record what you think you need to answer your
  question

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Begin!

• Select the materials that you need to set up your
  investigation
• Set up your investigation
• Draw a picture of your final set-up

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Record your data

• Decide how you want to record your data in your
  notebook
• Record any additional observations
• What did you learn?
• Prepare to share your information with the class

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What have we learned about this organism?

• Record several generalizations that you can now
  make about this organism

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What have we done?

• Exploration?
• Investigation?
• Controlled experiment?

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What else do you want to know?

• What would you like to test next?
• Select one factor that you can change to learn to
  test your new understanding of this organism?

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What is a quality scientific experiment?

• Explore a phenomenon
• Ask a question
• Predict the outcome
• Develop Hypothesis
• Develop a controlled experiment
• Collect data
• Gather evidence
• Answer the question with supporting evidence
• Evaluate the outcome

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Natural Environment

• Decaying leaves and woody debris
• In the classroom, we grow it in a petri dish
  filled with agar and feed it a few flakes of
  oatmeal

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Research existing knowledge

• Read the first paragraph of the handout
• Write down four things that are known about the
  organism in question.
• 1. Large single celled organism
• 2. Can be cut and cultured
• 3. Responds to the environment
• 4. Can move like an ameba

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What is the name of this organism?

• Common name Slime Mold
• Scientific Name Physarum polycephalum