Worms are the kings of the decomposers. A four-part instructional activity has learners experiment with the characteristics of earthworms and their sensitivities. They vary factors such as light, acidity, temperature, and touch of soil and observe the reaction of a group of earthworms.

Concepts

soil, decomposers, earthworms, food webs

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Additional Tags

science

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Instructional Ideas

• Have pupils use a table to record observations from the experiment
• Vary the type of worm groups used to make comparisons following the experiments

Classroom Considerations

• Allow time to collect and prepare the necessary materials

Pros

• Provides a detailed teaching guide to help prepare for the lesson
• Offers an option to extend the lesson

Cons

• None