Scientific Investigation, Independent & Dependent Variables

Create a hypothesis

A general statement: Example: I believe that ( all birds must flap their in order to fly).

Procedure

A series of step that can be repeated.

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Choudhry

Design an Experiment

Compare bird that fly to those who don't. Make a chart based on weight, wing shape, feet, excretory system, etc.

Observation/Ask a Question

Ex: Why do Birds Fly?

Collect & Analyze Data

I found that 15 boys out of 25 took candy out of the teacher desk; so 60% of the boys stole candy from the teacher.

Control

Is part of the experiment designed to minimize the effects of variables other than the independent variable. This increases the reliability of the results, often through a comparison between control measurements and the experimental measurements.

Materials

Items you need to perform the experiment

Constant

Occurring continuously over a period of time. Ex: wings, feet, eyes, feathers.

Graphing the Dependent Variable

The dependent variable is always graph on the Y-Axis. Example: Plant Height.

Conclusion

The end results: After looking at the data and come up with a solution. (Flightless birds like the dodo, ostrich, emeu are two heavy to fly).

Variables

The factors that have a direct affect on the experiment.

Graphing the Independent Variable

The independent variable is always graph on the X-Axis. example: Time

Independent Variable

The manipulating variable: In this example experiment, the independent variables are: The weight, height, feet and shape of the wings.

Dependent Variable

The object or objects being affected by the independent variable. ( birds)

Question

Trying to explain the phenomenon that you are observing!