In an experiment, the one variable that you change to see if it CAUSES something to happen.

In an Experiment, the variables you keep the SAME for all groups.

In an experiment, what you MEASURE to see if there was an EFFECT

What is the Independent variable in this hypothesis? IF students go to bed by 9 PM, THEN their test scores will increase.

What is the independent variable in this hypothesis? IF teachers give homework time in class, THEN the # of completed assignments will increase.

What is the DEPENDENT VARIABLE? IF students say GOOD MORNING to teachers, THEN the # of times teachers smile will increase.

Which variable is a control? In an experiment, Mrs. Totten wanted to see if giving students a peppermint before class would increase the # of minutes students focused in class. She gave 20 students the same kind of mint.

Which is a good INFERENCE for these observations? You see marching bands, fire trucks, kids in a group doing cartwheels down the main street of town.

A possible explanation for a set of observations or answer to a scientific question.

A factor that can change in an experiment.

facts, figures, and other evidence gathered through observations

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