Something that can change or influence the results of an experiment. The variable that you are testing.

The variable that might be affected as a result of the change made in the investigation. This is the variable that you will measure.

The variables that could affect the outcome of the experiment, so you have to make sure that these stay the same each time you do the experiment.

Step by step method used to solve a problem or answer a question.

A test or trial performed in order to discover something

An educated guess as to the outcome of an experiment

To notice something using one or more of your five senses

It was once a hypothesis that has been tested with repeated experiments and observations and found always to work

Students of different ages were given the same puzzle to assemble. The puzzle assembly time was measured. What is the independent variable?

A student wanted to find out if the amount of water given to a plant would affect the plant's growth. What is the dependent variable?

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