Sci method (STAR review)


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Sci method (STAR review)

  2. 2. THE FIRST THING NEEDED FOR THESCIENTIFIC PROCESSReceiving knowledge of the outside worldthrough the senses. May also includerecording the new knowledge.OBSERVATION!!!!!
  3. 3. NEXT: INFERENCE & HYPOTHESIS!Inference!!The process ofdrawing aconclusion basedon yourobservations andlogic.Hypothesis!!Your proposedexplanation for theobservedphenomena.
  4. 4. THEN, SET YOUR PARAMETERSParameter:How far you will be testing yourhypothesis.How in depth will you be testing?
  5. 5. THEN, SET YOUR PARAMETERS• EXAMPLE: If I wanted to test the lifecycle of frogsbased on location (environment) I would need todecide what my parameters are.• Bay Area? California? North America? Americas(Canada, America, Central America, South America) or theentire world.
  6. 6. INDEPENDENT VS. DEPENDENTVARIABLESManipulated VariableThe variable that isbeing changed.Only ONE variablechanged at atime!!!!!!!!!!Responding VariableThe variable thatchanges as aRESULT of theindependentvariable.(Independent Variable) (Dependent Variable)
  7. 7. INDEPENDENT VS. DEPENDENTVARIABLESWHICH IS WHICH?• Measuring the growth of a plant when “watered” withdifferent liquids.• Counting the number of people who stop when they see adollar on the ground.• Timing how long someone can run after drinking an energydrink.
  8. 8. CONTROL THE EXPERIMENT!!Controlled ExperimentThis can be accomplished when you onlyhave ONE variable manipulated at atime!!Or else, how do you know whichchanged variable caused the results???
  9. 9. CONTROL THE EXPERIMENT!!• If I am testing what will cause people to notice T-Pain (my fish) more, I will need to create acontrolled experiment.• I decide to test if a sign hanging above his bowl willcause people to notice him more, but I also buy abrighter new plant to put in his bowl.• I record that 30 more students mention T-painthroughout the day.• Which change caused the extra 30 students tonotice him?
  10. 10. CONTROL THE EXPERIMENT!!How would the following experiments be controlled?• Measuring the growth of a plant when “watered”with different liquids.• Counting the number of people who stop whenthey see a dollar on the ground.• Timing how long someone can run after drinking anenergy drink.
  11. 11. DATA-DATA-DATA-DATA-DATA!Qualitative Data:Descriptors such as:Color, gender, texture…What else??Quantitative Data:MeasureableQuantities:Size, temp, mass…What else???
  12. 12. DATA-DATA-DATA-DATA-DATA!• Look around the room and on your notes, writedown three qualitative observations and threequantitative observations.• When you’re done, look at me.• When I tell you to, compare answers with yourelbow partner.
  13. 13. THEORY VS. LAWTheory:Widely tested andgenerallyaccepted.We’re talkingWORLDWIDE, peopleLaw:Predictable resultsfrom a set ofconditions.No one willargue that ifyou dropsomething, itfalls down (onearth)
  14. 14. THEORY VS. LAW• Which comes first? Theory or Law?• What comes before a theory?• How many theories do you think actually exist?
  15. 15. THEORY VS. LAW“I have a theory!”“No. No youdon’t.”
  16. 16. GRAPHING!• Remember: DRY MIX• Dependent Variable• Responds to the change• Y-Axis (that’s where it goes)• Manipulated Variable• Independent (you have changed it)• X-Axis