Grade 5 · Science · Lesson 2

Variables & Controls

Every fair experiment has three kinds of variables. Knowing which is which is the key to designing a test you can actually trust. If you can label the variables clearly, you can tell what caused a result and what was just along for the ride.

What this lesson teaches

1Identify the independent variable in an experiment
2Identify the dependent variable in an experiment
3Recognize the controlled variables that keep a test fair
4Explain why controls are needed to compare results

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