Page 35 - 新思维科学学生用书4 样章

1 Living Things

Project: Earthworm farming

Earthworms are invertebrates. Earthworms live in the earth or soil.

People all over the world keep earthworm farms. They grow the

earthworms in containers that are dark and moist inside, like the soil.

The farmers feed the worms with materials such as vegetable peels
and garden waste. Earthworms leave droppings called ‘castings’. The

earthworms’ castings form a substance called worm compost. The

worm compost contains substances that help plants to grow better. The

worm farmers sell the worm compost to gardeners and other farmers.

Activity

Work in pairs.

Speak to someone in your local area who farms earthworms.

These are some questions you could ask:

• Why did you decide to farm earthworms?

• Where do the earthworms live?

• What materials do the worms live in?

• Which foods do the earthworms like to eat?

• Which foods don’t the earthworms like to eat?
• How much time does it take for the worm compost to form?

• How does the earthworm farm affect the environment?

You can also think of your own questions that you would like to ask.
Take photographs and make a PowerPoint presentation of your

findings to show to the class.

What role did I have in this project?

Am I happy with the work I did?

What could I do differently next time to work better?

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