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Scientific Method I I.Steps In Scientific Method I.Observation/Problem II.Hypothesis III.Experiment IV.Data Collection V.Conclusion VI.Retest  Theory.

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Presentation on theme: "Scientific Method I I.Steps In Scientific Method I.Observation/Problem II.Hypothesis III.Experiment IV.Data Collection V.Conclusion VI.Retest  Theory."— Presentation transcript:

1 Scientific Method I I.Steps In Scientific Method I.Observation/Problem II.Hypothesis III.Experiment IV.Data Collection V.Conclusion VI.Retest  Theory II.Observation/Problem I.Must be testable II.Ex. Are Canaries prettier than blue birds? Not Testable!! III.In the form of a sentence IV.Ex. Do bean seeds grow faster when fed compost or fertilizer? III.Hypothesis I.Must be testable II.Answers the observation ? and predicts an outcome of the experiment. III.If…..independent variable, then ….dependent variable IV.Ex. If given compost, then bean plants will grow faster than those given fertilizer IV.Experiment I.Set of procedures to test a hypothesis II.Must be numbered III.No Pronouns (I, he, she…etc.) 11

2 Scientific Method II 13 I.Data Collection I.Control Group I.Group not exposed to variable being tested  used for comparison II.Ex. Plant 1 is not given compost or fertilizer II.Experimental Group I.Group exposed to variable being tested II.Ex. Plant 2 is given fertilizer and Plant 3 is given compost III.Independent Variable I.Factor being changed II.Always on the x-axis III.Ex. Plant 1, Plant 2, Plant 3 IV.Dependent Variable I.Factor that is measured/observed II.Always on the y-axis III.Ex. Plant growth V.Either qualitative (pictures) or quantitative (numbers) VI.Data organized in charts and graphs

3 Scientific Method III 13 I.Data Collection I.Charts I.Must have both independent and dependent variables II.Must have Title Amount of Growth (aka Dependent Variable)‏ Independent Variables Plant Growth Over Time

4 Scientific Method III 13 I.Data Collection I.Graphs I.X-axis  independent variable and Y-axis  dependent variable II.Line Graph I.Used to show changes in dependent variable (plant growth) over time. II.Must have title, x-axis title (with units) and y-axis title (with units)

5 Scientific Method III 13 III.Multiple Line Graph I.Used when measuring several different dependent variables II.To show how they change relative to one another. III.Must have titles and legend

6 Scientific Method III 13 IV.Bar Graph I.Use it when a set of measurements can be split into discrete and comparable groups II.To show the relative change between these groups. III.Must have titles and legend

7 Scientific Method III 13 V.Multiple Bar Graphs I.Use it to separate the dependent variable within each group and II.Demonstrate its exact variation among them. III.Must have titles and legend

8 Scientific Method III 13 VI.Pie Graph I.When showing parts of a whole..i.e. percentages II.Must have a title and a legend

9 Scientific Method IV 13 I.Conclusion I.Claim I.Restate your hypothesis II.Ex. If given compost, then bean plants will grow taller than those given fertilizer. II.Evidence I.Accept or reject your hypothesis II.Use the numbers from your chart and graph to explain why. III.Plant C which was given only compost grew to a maximum height of 5 cm, Plant B which was given fertilizer grew to a maximum height of 4cm and Plant A which was given nothing at all grew to a maximum height of 3cm. Therefore, the hypothesis is accepted. III.Reasoning I.Scientifically explain WHY what happened occurred. II.Fertilizer contains only trace elements such as phosphorous, nitrogen and sulphur while compost contains decaying matter which can provide many complex organic nutrients for a bean plant. Therefore, the plant treated with compost grows taller.

10 Scientific Method IV 13 I.Retest I.Verify results II.Creation of Theory II.Review I.Observation/Problem II.Hypothesis III.Experiment IV.Data Collection V.Conclusion VI.Retest  Theory


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