How to Color Code an Earthworm Diagram

Color coding an earthworm diagram helps you to learn about and identify organ systems. Use a legend to signify which colors indicate the circulatory system, reproductive system, digestive system and nervous system. Draw your own diagram or use a black and white photocopy of a diagram from a science book or online source.

Things You'll Need

• Earthworm diagram
• Red, blue, green, yellow markers

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Instructions

1. • 1

     Draw a box in one corner. Title it "Legend." Write in each of the organ systems and assign them each a color. For example, write "Circulatory System=Red."

   • 2

     Locate the first organ system on the diagram. Color it according to your legend.

   • 3

     Locate and color each of the other systems.