Presentation is loading. Please wait.

Presentation is loading. Please wait.

7 Steps to a Logical Process

Similar presentations

Presentation on theme: "7 Steps to a Logical Process"— Presentation transcript:

1 7 Steps to a Logical Process
The Scientific Method 7 Steps to a Logical Process

2 1. Hypothesis versus Theory
Established idea Factual Experiments Data Hypothesis: Educated guess Outcome If I do….then I expect…… correct or incorrect

3 Control versus Experimental groups
one variable one condition different from control more variables = more controls Control: comparisons “Normal” condition Eliminates bias

4 Experimental Variables:
Independent Variable: One condition that is changed from the control group Example: control = normal plant growth conditions independent variable= growth under no fertilizer Dependent Variable: the condition measured as a result of adding the independent variable Example: Measure growth in height as a result of no fertilizer

5 3 & 7.Data versus Opinion…... Data: Factual Measurable Replicates
Personal Inferences versus observations? bias

6 4. Types of Experimental Bias
as opinion: Expectations Influences results Psychology experiments in design: Unequal treatment Poor Controls Plant experiments

7 Replicates of each group:
“Make an exact copy” Each group must have more than one setup for comparing results & verifying test conditions Minimum of 10 replicates

8 Scientific Data Must Be…..
Measurable Quantifiable NOT opinion or judgment

9 7 Steps of the Scientific Method
? Different ? Precise ? Steps necessary? ? Most important

10 1. Identify the question What How Not “Why”

11 2. Background research…... Libraries Internet Experiments Researchers

12 3. State you hypothesis Educated guess Outcome Cause……leads to effect
IF I do………then I expect………….

13 4. Design an experiment 2.Experimental Group 3.One variable
1.Control 2.Experimental Group 3.One variable 4.Replicates

14 5. Collect data Measurable Machine Tool Color chart Factual

15 6. Analyze data Agreement in replicates Good Controls Graph trends

16 7. Communicate results Publish Conference Web page Design errors

17 CONCLUSION: Which Step? What is needed? Measurable Data

18 Characteristics of Living Things:
Structure & organization: cells, DNA, tissues & organs Reproduction Growth & development Respond to their environment Metabolism: sum of all chemical reactions Maintain homeostasis by using energy Adapt and evolve

Download ppt "7 Steps to a Logical Process"

Similar presentations

Ads by Google