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Worksheet to Accompany “Planning and Conducting
Scientific Investigations” PowerPoint
1. As a class, discuss how to improve this scientific question: “Is more fertilizer better for plants?” Write
the revised scientific question:
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2. As a class, devise a good hypothesis for the scientific question you revised above:
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3. As a class, identify the variables in your experiment:

Independent variable (and how it’s measured): ________________________________

Dependent variable (and how it’s measured): _________________________________

Confounding variables: ____________________________________________________
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4. As a class, design your experiment. Assign plants to either the experimental group or control group.
Identify the levels of your treatment group (experimental group).
Amount of
Fertilizer:
Control Group
Levels of Treatment Group:
________
_______ _______ ________ ________ ________