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Scientific Method Who uses it? What is it? Why should I care?

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Presentation on theme: "Scientific Method Who uses it? What is it? Why should I care?"— Presentation transcript:


2 Scientific Method Who uses it? What is it? Why should I care?

3 Everyone uses it everyday.  Yes … Even YOU!

4 It is a way to solve problems. Do you have any problems to solve?  Any big or any small ones?

5 Any of these sound familiar?  Where did I leave my shoes?  Which of these two deodorants lasts longer?  What should I have for lunch?  Which class do I go to next?  Where did I put my science homework?  Did I EVEN DO my science homework?

6 There are six steps to the Scientific Method.  1. State the Problem  2. Gather Information  3. Form a Hypothesis  4. Plan an Experiment  5. Analyze Data  6. Draw Conclusions

7 By following these steps in order you will learn about your question.  Notice the IN ORDER part. It is very important!!!!

8 You can remember the steps of the scientific method by using the following mnemonic device:  SIX  GREAT  FARMERS  PLANT  ALL  DAY

9 State the Problem (SIX) *This is the question that you are trying to answer or problem that you are trying to solve. *Try to narrow it down and be very specific.

10 Gather Information (GREAT)  Gather data about your question. You can use any of the following sources: books magazines internet reports experts your past experiences

11 Form a Hypothesis (FARMERS) Well… What exactly is a hypothesis anyway? educated  -an educated guess based  -a prediction based on data gathered information (Remember—your hypothesis should be made before your experiment is conducted.)  -what you think the answer to your question is based on your gathered information (Remember—your hypothesis should be made before your experiment is conducted.)

12 Plan an Experiment (PLANT) This is broken into 2 parts: materials & procedure  Materials - a list of equipment and supplies that you will need to perform your experiment.  Procedure - a list of instructions that you need to follow for the experiment.

13 Analyze Data (ALL)  Collection of information and data from the experiment.  It may be charts, graphs, tables, or written work.  This is WHAT HAPPENED while performing the experiment!!

14 Draw Conclusions (DAY)  What did you find the answer to the question was?  This is where scientists decide whether the original hypothesis was correct. --If the answer is “YES” then you are done. --If the answer is “NO” then a new hypothesis is made and you repeat the experiment.  It is OK if it turns out that your hypothesis was not correct. You learned something new!!!!!!!!

15 Report your results  One of the most important parts of the scientific method is to report to others your findings.  You will help others learn, too.

16 THE RATTLESNAKE EXPERIMENT Now we are going to look at an experiment that a scientist who studies animal behaviors and adaptations may conduct in a laboratory. Let’s say a scientist observed that once a snake has bitten its prey, it follows an imaginary trail to the exact location of its prey.

17 Stating the Problem  What causes the invisible trail a rattlesnake follows in tracking down its bitten prey?

18 Gathering Information  A rattlesnakes eyes are only sensitive to visible light.  A pair of organs located under the eyes detect invisible light in the form of heat.  A rattler’s tongue “smells” certain odors in the air.  The sight or smell of an unbitten animal does not trigger the rattler’s tracking action.

19 Hypothesis  After the snake wounds its victim, the snake follows the smell of its own venom to locate the animal.

20 Experiment  Drag a dead mouse that has been struck and poisoned by a rattlesnake along a curved path on the bottom of an empty cage.  Place the snake in the cage.  The snake follows the exact trail that has been laid out.  Control (the mouse)  Drag an unbitten dead mouse along the path.  The snake seems disinterested. The variable in this experiment is whether the mouse contains venom or not.

21 Recording and Analyzing Data  Do the experiment several times (at least 3)  Record the data

22 Conclusion  The scent of venom was the only factor that could cause a rattlesnake to follow its bitten victim.

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