sunnuntai 23. tammikuuta 2011

September we study water things

We studied water things in september.

We measured that washing hands takes about 1,5 liters water. If we add up all the water used to wash hands at our school, we use quite a lot of water, about 31,5 liters.

We have also counted the price of the water we use. It was a surprise that sewage is more expensiv than clean water. We have understood that the sink doesn`t have to be at full filt.

Sonja Holm

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