We made a map about how we can get our drinking water.
1 remove sands and dusts in the water
2 control the quantity of the water
3 put chemical medicine into the water to coagulate minute dusts
4 remove the coagulated sands and dusts
5 strain out the dusts
6 sterilize the water
7 keep the purified water in a clean water basin
8 send the water to each area's tank by pumps
9 send the water to each place in Aida
10 We can use the clean water at home.
At school
We use water every day for living and studying in our school. The taps are on each floor. The right picture is the home economics classroom. There are many taps.
We counted the number of taps in our school. Our school has 198 taps.
Update: 2002/10/06 18:26:48
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