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Scientific Method

Scientific Method. A systematic approach to problem solving. What is the scientific method?. It is a simple method scientists use to conduct an investigation. It is a way to ask & answer scientific questions by asking questions & conducting experiments. Problem.

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Scientific Method

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  1. Scientific Method A systematic approach to problem solving.

  2. What is the scientific method? • It is a simple method scientists use to conduct an investigation. • It is a way to ask & answer scientific questions by asking questions & conducting experiments.

  3. Problem • Clearly stated in QUESTION FORM • Why? • How? • What? • How do Jumping Jacks affect heart rate?

  4. Information • Exercise raises the heart rate in the short term • Exercise causes the body to need more energy, more glucose must be broken down and processed into usable energy for cells • More intense exercise causes the need for more oxygen, more quickly. To keep up the heart pumps blood faster, resulting in a higher heart rate.

  5. Information • What factors affect the problem • Observations- things that you can see, hear, smell, taste, or feel • Ex. Workouts include jumping jacks • Inferences- conclusion based on your observations • Ex. Jumping jacks are a good form of exercise

  6. Hypothesis • Educatedguess prediction • Use If, then statements • If ____ [I do this], then _____ [this will happen] • If students complete jumping jacks, then their heart rate will rise.

  7. Experiment • Tests your hypothesis. • Independent Variable- what the experimenter changes • Dependent Variable- what you measure (the response to the change) • Constants- things that stay the SAME • Control group- group used for comparison • Experimental Group- group that the IV is applied to

  8. Experimental Procedure • Measure your resting heart rate and record the number of beats per minute. • Group 1 will complete one minute of jumping jacks. Group 2 will sit in their seats for one minute. • Both groups will immediately measure their heart rate and record the number of beats per minute. • Each group will calculate their change in heart rate.

  9. Calculate your change in heart rate • (Heart rate after 1 minute) – (Resting Heart Rate)

  10. Experiment EXAMPLE • Independent Variable- no jumping jacks vs. jumping jacks • Dependent Variable- change heart rate • Constants- same person, same method of taking heart rate, same amount of time • Control group- not completing jumping jacks • Experimental Group- completing jumping jacks

  11. Data • Numerical Observations • Arranged in tables and graphs

  12. Data

  13. V. Conclusion • Analyze the data • Do you accept or reject your hypothesis? • Evaluate the research

  14. What next?? • If you reject your hypothesis (not supported), you modify your hypothesis and complete the experiment again! • If you accept your hypothesis (supported), you REPEAT the experiment several times to gather more data

  15. Jumping for Joy • How did we do? • What should we do next? • What further research could we complete? (Ex. Other forms of exercise?)

  16. REMEMBER THESE STEPS! • PEOPLE Problem • IN Information • HERSHEY Hypothesis • EAT Experiment • DARK Data • CHOCOLATE Conclusions

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