The scientific method
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The Scientific Method. Know these 6 steps!. Step 1: Identify the problem. A problem is just something that piques your interest Example: my i -pod quits working. In your journal, draw the box on the left!. PROBLEM :

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The Scientific Method

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The scientific method

The Scientific Method

Know these 6 steps!


Step 1 identify the problem

Step 1: Identify the problem

  • A problem is just something that piques your interest

  • Example: my i-pod quits working

  • In your journal, draw the box on the left!

PROBLEM:

________________________________________________________________________________________________________


Step 2 research make observations

Step 2: Research (make observations)

RESEARCH (OBSERVATIONS):

____________________________________________________________________________________________________________________

  • Quantitative (QN) observations: facts with numbers

  • Qualitative (QL) observations: facts without numbers

  • Inferences: logical guesses based on observations

  • What do you already know about the problem? What do you need to find out?

  • Example: I don’t hear any sound coming from my i-pod. The screen is not lighting up on my i-pod.


Step 3 make a hypothesis

Step 3: Make a hypothesis

  • This is known as an “educated guess” because you have done research on your problem and so the answer has some facts behind it.

  • Hypotheses can change over time as scientists do more research and discover new information.

  • Example: My i-pod isn’t working because the battery needs to be charged.

HYPOTHESIS:

________________________________________________________________________________________________________________


Step 4 perform an experiment

Step 4: Perform an experiment

EXPERIMENT:

________________________________________________________________________________________________________________________

  • An experiment is used to test the hypothesis that was formed in step 3. In a controlled experiment, only one variable is changed.

  • Materials: what do you need to conduct the experiment

  • Procedure: what are the steps you need to take to conduct the experiment

  • Example: I am going to plug the charger into my i-pod, wait 30 minutes, and then see if it works.


Step 5 analyze the data

Step 5: Analyze the Data

DATA (analyze):

________________________________________________________________________________________________________________________

  • Data should be written in a table, with the independent variable in the left column and dependent variable(s) in the right hand column(s)

  • If appropriate, data should then be shown in a chart or graph (line graph, pie chart, etc.)

  • Example:


Step 6 conclusion

Step 6: Conclusion

  • Was your hypothesis correct?

  • What did you find?

  • If your hypothesis was correct, restate it in the conclusion.

  • If your hypothesis was incorrect, state that the hypothesis was rejected by the data.

  • Example: In my experiment I found that my i-pod’s battery needed to be charged in order for the i-pod to work again.

CONCLUSION:

________________________________________________________________________________________________________________________


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