Activity: How It Works

Function parameters are special variables created just for use in a function. Function parameters have two parts:

  • The parameter names are in the line that defines the function. Example: background_img and sprite_img.
  • The arguments (parameter values) are in the call line. For example, "space" and "astronaut1".
  • Click Run to see a function with parameters. Follow the onstage directions to complete the demo.
  • At the end of the demo, you will be asked to add a call line with arguments to the code!

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