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nAn experimenter changes one factor and observes or measures what happens.nControls are NOT being testednControls are used for COMPARISONOther VariablesnThe factor that is changed is known as the independent variable.nThe factor that is measured or observed is called the dependent variable.nFor example,suppose you want to figure out the fastest route to walk home from school.nYou will try several different routes and time how long it takes you to get home by each one.nSince you are only interested in finding a route that is fastest for you,you will do the walking yourself.One more thing it is best to make several trials with each independent variable.nTwo groups are required-the control&experimental groupsnThere should be only one variablenResults of the experimentnMay be quantitative(numbers)or qualitative(words)nMust be organizednCan be organized into charts,tables,or graphsnThe answer to the hypothesis based on the data obtained from the experimentIn order to verify the results,experiments must be retested.1)Identify a Problem2)State Observations about the problem3)Form a Hypothesis about the problem(ifthen)4)Design an Experiment to test the hypothesis5)Collect Data6)Form a Conclusion7)RetestReviewNo need to write these slides down in notebookIn what part of the scientific method do you write an investigative question?nIdentify the problemWhat are the two parts of the analysis?nCreate a graph and write a summaryA conclusion needs to support orrepudiate your _.nhypothesisHow do we record data in an experiment?ndata tables(rows and columns)The independent variable may change the _ variable in an experiment.ndependentWhen we are finished with our experiments we _ our findings.ncommunicateWhat do we call informationcollected during the experiment?nDataThe procedure is a list of_ that describes the experiment.nStepsHow many times should an experiment be repeated?nMany times to help average issues such as human errorVariables that are kept the same are called _ncontrols
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