Steps of the Scientific Method

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Presentation transcript:

Steps of the Scientific Method © Lisa Michalek

The Scientific Method involves a series of steps that are used to investigate a natural occurrence.

Let us take a closer look at the steps and terminology you will need to understand before starting a science experiment.

Observation/Research Formulate a Hypothesis Experiment Scientific Method Problem/Question Observation/Research Formulate a Hypothesis Experiment Collect and Analyze Results Conclusion Communicate the Results

Steps of the Scientific Method Problem/Question Develop a question or problem that can be solved through experimentation.

Steps of the Scientific Method Observation/Research Make observations and research your topic of interest.

Steps of the Scientific Method Formulate a Hypothesis Predict a possible answer to the problem or question. Example: If soil temperatures rise, then plant growth will increase.

Hypothesis The hypothesis is an educated guess about the relationship between the independent and dependent variables.

Independent Variable The independent, or manipulated variable, is a factor that’s intentionally varied by the experimenter.

Dependent Variable The dependent, or responding variable, is the factor that may change as a result of changes made in the independent variable.

Steps of the Scientific Method Experiment Develop and follow a procedure. Include a detailed materials list. The outcome must be measurable.

Experiment Develop a procedure, list the needed materials and then, determine the control group.

Control Group the control is the group that serves In a scientific experiment, the control is the group that serves as the standard of comparison. The control group may be a “no treatment" or an “experimenter selected” group.

Control Group The control group is exposed to the same conditions as the experimental group, except for the variable being tested. All experiments should have a control group.

Constants All other factors are kept the same so that any observed changes in the experiment can be attributed to the variable.

Constants The constants in an experiment are all the factors that the experimenter attempts to keep the same.

Trials Trials refer to replicate groups that are exposed to the same conditions in an experiment.

Steps of the Scientific Method Collect and Analyze Results Modify the procedure if needed. Confirm the results by retesting. Include tables, graphs, and photographs.

Steps of the Scientific Method Conclusion Include a statement that accepts or rejects the hypothesis. Make recommendations for further study and possible improvements to the procedure.

Steps of the Scientific Method Communicate the Results Be prepared to present the project to an audience. Expect questions from the audience.

Observe your world and come up with a question to answer using the Scientific Method!