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Scientific Method Steps

Scientific Method Steps. 1. Problem/Question- what question does the researcher want answered? The question must be testable. 2. Research- you must gather information from online sources, books, printed material, other people, and prior knowledge

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Scientific Method Steps

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  1. Scientific Method Steps • 1. Problem/Question- what question does the researcher want answered? The question must be testable. • 2. Research- you must gather information from online sources, books, printed material, other people, and prior knowledge • 3. Hypothesis- a possible explanation for observations that relate to a scientific question; must be testable; must include the words if, then, and because • 4. Conduct an Experiment- complete an experiment to test hypothesis; the experiment includes procedures and can involve observations (5 senses); uses 3 variables- independent, dependent, and control • 5. Record Results- record the data gathered from an experiment in a table, chart, or graph • 6. Conclusion- communicate results and explain possible errors that occurred

  2. Qualitative vs. Quantitative • Qualitative- describes data and does NOT include numbers; observations (5 senses) • Examples: color, texture, smell, sight, shape, taste, size • Quantitative-data that includes NUMBERS • Examples: height, length, width, number,

  3. Reflection • Give 3 examples of qualitative data • 1. • 2. • 3. • Give 3 examples of quantitative data • 1. • 2. • 3.

  4. Bubble Bonanza Question Which type of soap will produce the largest bubble?

  5. Bubble Bonanza Hypothesis If the ((Hand or dish soap or both) is used, then it will create a (bigger or smaller) bubble, because ___________________.

  6. Bubble Bonanza Solution A Pink Solution Solution B Dark yellow

  7. 3 types of variables

  8. Control Variables/Group • Control Variables- variables that stay the SAME; there can be more than one • Control Group- serves as a method of comparison; does NOT receive the test subject • Example: measure the effect of different types liquids on plant growth. • Liquids: water, diet coke, lemonade, Coca-Cola, and tea

  9. Independent Variables • Independent- variable that is CHANGED in an experiment; manipulated • Ex. Measuring the effect of different liquids on plant growth: independent- type of liquid

  10. Dependent Variables • Dependent- variable that is MEASURED • Ex. Measuring the effect of different liquids on plant growth: Dependent- plant growth

  11. DRY MIX • D- Dependent • R-Responding • Y-Y-Axis • M-Manipulated • I-Independent • X- X-Axis

  12. Observation vs. inference • Observations are: • 1. Factual • 2. objective • 3. gathered using 5 senses • 4. free of opinion/ideas Inferences are: 1. conclusion/assumption 2. based on observations 3. subjective 4. formed from an opinion- previous knowledge Ex. 5 plants- watered with: water, Gatorade, coca-cola, diet coke, lemonade

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