Follow Steps to the Scientific MethodResearch ... your ideas and any relevant information that supports your experimental design, hypothesis, or general background understanding. Cite your sources! No plagiarism!Example: If you are using an oscilloscope, cite the source for defining what it is and what it does.PurposeFocus Question. What do you want to learn, compare, disprove, or test? Avoid asking a "yes/no"answerable or "which is best?" question.Example: Which brand of bandages stays on the longest?HypothesisPrediction; educated guess.Possible answer to your question based on gathered info.Example: I think Cur-aid brand band-aids will stay on the longest because they are the most expensive and that’s what their advertisement claims.Controlled ExperimentTests a hypothesis.Experiment in which ALL but one variable being tested are kept the same in order to make the experiment fair and the results reliable.VariablesAny factors in an experiment that could affect the results and are therefore tested separately (like mass, temperature, light, time, amount, age, etc.)Examples: What variables might affect how long bandages stay on?Controlled Variables: Not changed, but kept the same, fair(Same person’s skin, stuck on same day in same places, etc.)Independent Variable: a factor intentionally changed in the experiment(the brand of bandages)Dependent Variable: a factor affected as a result of the independent variable(number of days the bandages stay on)SamplesNumber (#) of items tested in an experiment. (# of brands, kinds, etc.)Example: Cur-aid, Equate, and Johnson brandswill be compared.TrialsNumber (#) of times running through a procedure in an experiment. (minimum of 3 to be reliable)Example: Each brand will have 8 bandages tested.ProcedureOrderly (step-by-step) directions on how to do the experiment. Give command statements like a recipe.Example: Day 1: A) Shower and dry well (no lotion).B) Attach two bandages of each brand to eachforearm and each shin (eight total bandages foreach brand). Day 1-12: A) Observe how wellbandages stay attached. B) Record when, where,and possible reasons why a bandage falls off assoon as noticed.Quantitative ObservationsMeasurable information (Data) collected using one’s senses and any helpful equipment such as ruler, timer, camera, thermometer, etc. Usually recorded and displayed on a table and on a graph.Example Data Table: Bandage Lifespan
Cur-aid & Johnson/gymExample Graph: Bandage Lifespan Comparison linkAnalysisOrganization and study of RESULTS .
What did you get? Describe and compare observations and outcomes.ConclusionCompares hypothesis to results, evaluates procedural error and makes recommendations.Did you get what you expected?
How could you have better controlled variables?
To whom or how are your findings interesting or helpful?