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P P P RO JE CT Do an experiment!
PROJECT
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CT
JE
JE
RO
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Use the worksheet below.
SCIENCE EXPERIMENT WORKSHEET
QUESTION
How fast do di ferent materials biodegrade

4 COMPOSTING ITEMS:
MATERIALS a piece of

You will need: newspaper a plastic cup
soil scissors
scissors
a large glass jar water a banana
with a lid skin a cardboard box
© MM Publications
a cardboard box
METHOD
STEP 1 STEP 2 STEP 3 STEP 4 STEP 5

Put your Using the Leave the jar near Stop to think: Check your compost
composting
composting scissors, a window and, What do you jar once a week
items (or make a every now and think will happen? (for ive weeks) to
pieces of hole in then, add more Which items will see whether any
them) in the lid. water and shake biodegrade irst of the items have
the jar gently.
the glass Then put the jar gently. and which ones changed. Go to the
jar. Fill the lid on last? Go to the Observation box.
the jar the jar. Hypothesis box.
with soil. Pour a small STEP 6
Make sure you can amount of water What did you
still see all the items through the hole. learn from this
from the outside.
experiment? Go to
the Conclusion box.
HYPOTHESIS
What do you think will happen? Which items will biodegrade irst and
which ones last? Complete the hypothesis.

I think that the will biodegrade irst, the
second, the third and the last.

OBSERVATION
What did you see?
When you check your compost jar, make a note of any changes you see. Do the items change colour or
shape? Do you see anything else interesting? Complete the table.
Date started
Item 1 week 2 weeks 3 weeks 4 weeks 5 weeks
1.
2.
3.
4.

CONCLUSION

What did you learn from this experiment?
I learnt that

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