2What is the Scientific Method? A process used to find the answers to questions we have about the world around us.
3Step 1: State the Purpose The reason why we are performing the experimentTHINK: Why are we performing our paper towel experiment?To determine if Bounty paper towel is more absorbent than the leading brand
4Step 2: Make a Hypothesis This is an educated guess as to what the outcome of your experiment will be.Written as an IF …THEN…BECAUSE statement.THINK: IF I do this experiment, THEN I think (can measure-DATA) the following change BECAUSE….EXAMPLE: IF I test 3 different brands of paper towel, THEN I think that Bounty will absorb the most water BECAUSE the ads say so.
5You Must Identify Your Variables A variable is any factor that can change in an experiment.(IF)Independent Variable – one thing that the scientist changes to make the experimentTHINK: What are we changing in our experiment?Brand of paper towel(Data)Dependent Variable - what the scientist measures as a result of the changes made (will be written as DATA)THINK: What are we measuring in our experiment?# of drops each paper towel absorbsControl Group -The group not directly being tested but is needed for comparisonTHINK: What is the control group in our experiment?Generic Brand of Paper towel
6Step 3: List the Materials A list of all the tools you will need to carry out your experiment.
7Step 4: Develop a Procedure Develop the steps for your experiment including all of the variables.Step 1 ~~~~~~~~~~~~~~~~~~~~~~~~Step 2 ~~~~~~~~~~~~~~~~~~~~~~~~Step 3 ~~~~~~~~~~~~~~~~~~~~~~~~
8Step 5: Collect DataFollow the steps in your procedure and record your facts, figures, and observations!Your results can be displayed in atable,graph,drawing,paragraph, etc.
9Step 6: Write a Conclusion Summarize what was learned from your experiment.State whether or not your hypothesis was supported or rejected.It should also discuss:Why the results are importantWhat you could do to make the experiment betterAny sources of experimental error
10Step 7: Communicate Your Results Share your findings in a formal way.This could be done by:writing a lab reportcreating a postergiving an oral presentation.
11It’s time to use the Scientific Method!!! GET READY…It’s time to use the Scientific Method!!!