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Scientific Method

Scientific Method. Continued. What did we talk about last time?. Observations Data Qualitative Data Quantitative Data Inference. Hypothesis. Hypothesis: an educated guess or prediction; a tentative solution to the problem. Should be written as:

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Scientific Method

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  1. Scientific Method Continued....

  2. What did we talk about last time? • Observations • Data • Qualitative Data • Quantitative Data • Inference

  3. Hypothesis • Hypothesis: an educated guess or prediction; a tentative solution to the problem. • Should be written as: • ”IF independent variable, THEN dependent variable” statement. • Example: If the soil temperature is increased, then the plant will grow taller.

  4. Variables • Independent variable: A factor in the experiment that is manipulated or controlled by the person doing the experiment. • Intentionally Manipulated or Controlled • Dependent variable: The factor in the experiment that depends upon any changes in the independent variable; the results of the experiment. • Intentionally left alone and Measured for data • Examples: • If a metal is heated, then it will expand. • If a lake freezes, then all of the fish in the lake will die.

  5. Experiment to Test the Hypothesis • Make a detailed list of materials • Make a detailed list of the procedure or directions for the experiment. • A controlled experiment will have: • Constant: factors that are not allowed to change. • Control: a standard of comparison to compare your data to • Independent variable • Dependent variable

  6. Record the Results • Results should be organized!! • Data table • Data Charts • Graphs Make sure that your results can be easily read and interpreted. Titles, units of measurement, and labels are a MUST...

  7. Interpret/Analyze the Results and Draw a Conclusion • What do the results mean? • Can the results be used to make a reasonable conclusion? • A final judgment, statement, or decision that is based upon the results. •  More experimentation may be necessary if a reasonable conclusion cannot be made based on the results. • You will need to EXPLAIN your data in this section. Restate your hypothesis to begin this section. Make sure you are detailed and use examples from data to help explain why your hypothesis was approved or rejected. • From here you will communicate your results to others.

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