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Experimental Design. CLASS NOTES. Note-taking Strategies:. Watch for main topic, key points, and organization of ideas Clues from teacher – “first, second, etc…” Make notes that highlight main ideas. Note-taking Strategies:. AFTER CLASS – Clarify notes – fill in missing info and highlight
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Experimental Design CLASS NOTES
Note-taking Strategies: • Watch for main topic, key points, and organization of ideas • Clues from teacher – “first, second, etc…” • Make notes that highlight main ideas
Note-taking Strategies: AFTER CLASS – • Clarify notes – fill in missing info and highlight • Recite and review once a week • Before assessment – recite understanding main ideas.
Experiments Test A Hypothesis • Scientists use an experiment to search for cause and effect relationships in an experiment. • These changing quantities are called variables. • A factor, trait, or condition. • Experiments are used to test a hypothesis.
Experiments should be controlled. This means there should be two groups: • Control group: left alone, used as comparison • Experimental group: one thing is changed – this is the variable, or what you are testing
Everything else should be kept the same, except for the one variable that you are testing in the experimental group
y Dependent variable • The dependent variable is what you are measuring or counting when you collect your data. This is plotted on the y-axis of a graph. Example: The height of the plants
X Independent Variable • The independent variable is what you are working with (manipulating) in an experiment. This is plotted on the x-axis of a graph. Example: The miracle grow and the plain water