Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids

INSTRUCTIONS:
1. You need the plastic bottles that you see in the picture. Cut
them as you see and join them together as in the picture.
2. Cut apiece of stocking to fit over the neck of the bottle that
is upside down. The stocking will stop the vegetable peels
falling through the hole, but it will let water go through.
3. Add the vegetable peels, old bread, and leaves.
4. Now slowly pour in the cup of water. Let the water go down
through the stocking, into the bottom container.
5. Now use the needle to make air holes in the top bottle, as you
see in the picture.
6. Mark the height of the compost column on the plastic. Write
the date next to the mark.
7. Each Friday, mark the height of the compost column again,
and write the date on the bottle.
8. Then take out the bottom container with the water in it, and
pour the water into a tin.
9. Then use the tin to pour all the water slowly back into the
compost. This will stop the compost from drying out.
10. Begin aclass logbook. A logbook is a book in which you write
down what happens on aday. Look at the example below
which shows Sophie's log book from when the Thunderbolt
Kids did the experiment in their class.
This is what you may see in Sophie's logbook.
Chapter 2. Surface of the Earth
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