|
Weight of Rubbish Produced by Kowhai Each Day (- all values are in
kg) |
|
|
Paper |
Food |
Metal (cans, tinfoil) |
Plastic Wrappers |
Bottles (plastic) |
Totals (location of bins) |
|
Class bins |
1.25 |
5.00 |
0.10 |
0.25 |
2.50 |
9.10 |
|
Outside bins |
4.00 |
12.00 |
1.25 |
1.70 |
4.00 |
22.95 |
|
Litter |
0.50 |
0.35 |
0.01 |
0.30 |
1.00 |
2.16 |
|
Totals (type of rubbish) |
5.75 |
17.35 |
1.36 |
2.25 |
7.50 |
34.21 kg / day |
Procedure
-
Worked out how
many bins were in the school and where they were located.
-
Realised that
it would be too big a job to go through all of them so we decided
to use sample bins and average the results.
-
Collected the
sample bins and tipped the rubbish out on a tarpaulin. For the
litter we went around the school after lunch and picked up as much
litter as possible.
-
Sorted the
rubbish into groups: paper, food, metal, plastic wrappers,
bottles.
-
Put each pile
into a plastic bag to judge how much space it took up.
-
Weighed each
bag and recorded the weight.
-
We noticed that
some small piles were quite heavy, while large piles (plastic
wrap) were light. Some piles could also be squashed down to take
up less space more than others.
-
Put the rubbish
back in the bins and washed our hands!
|
 |
|
Raymond, Sian and
Siosi helping to sort rubbish from the outside bins
Paper
usage - so far this year we have used:
|
Type |
Reams
(1 ream = 500 pages) |
Pages |
Cost |
|
White A4 |
900 |
450,000 |
|
|
Coloured A4 |
178 |
89,000 |
|
|
Total: |
1,078 |
539,000 |
$6,600 |
|
