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## PowerPoint Slideshow about ' The Scientific Method' - slone

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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:

________________________________________________________________________________________________________

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

- 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

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

DATA (analyze):

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- 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

- 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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