Мусаева Эльвира Адиловна
МАОУ Лянторская СОШ № 7
Класс – 7
умк – Happy English.ru , К.Кауфман
вид кейса – практический.
Содержание кейса.
Кейс по теме : « Environment. Plastic or paper bags»
Сравнение экологичности пакетов.»
1. Фильмы «Мусор»- http://gdz-elto.ru/44545-musor.html
« Plastic or paper bags
http://www.youtube.com/watch?v=BeqMd5_12wg и
презентация «День Земли» предлагаются учащимся для обсуждения.
2. Постановка проблемы.Проводится анкетирование.
«Ваш выбор- бумажные или полиэтиленовые пакеты в нашей
жизни» »
2. 1. How many new plastic, paper or eco bags do you
use?
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plastic
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paper
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eco
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0
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1-5
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6-10
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more
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2. What do you do with those bags?
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Throw away
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Reuse
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Recycle
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3. How often do you bring your own bags to stores?
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Never
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Always
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Once in a while
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4. Do you know that producing plastic and paper bags harm ecology?
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plastic
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paper
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Yes
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No
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Yes and don’t usethem
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5. Are you ready to refuse plastic and paper bags?
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Yes
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No
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3. Обсуждение анкеты. Учащиеся читают
ответы. Им предлагается использовать следующий Word list, фразы , которые они могут использовать в своем рассуждении.
Useful language bank for communication expressing opinion:
My point of view is that...
It seems\appears to me that...
I think\believe...\must...\
In my opinion\view...
To me...\may\might
From my point of view...
To my mind/ way of thinking...
As far as I am concerned...
I am totally against...
I (do not) agree that \with...
I (completely) agree \disagree that \with...
I want to ask a question.
Sorry, could you repeat that?
I think we should leave this point and come back to it later.
So what you’re saying is you will …
Can we just summarise the points we’ve agreed so far?
4. Вывод по результатам анкетирования.
Where do paper bags come from?
Paper comes from trees — lots and
lots of trees. Once the trees are collected, they must dry at least three years
before they can be used. More machinery is used to strip the bark, which is
then chipped and cooked under tremendous heat and pressure, what was once wood
becomes pulp. It takes approximately three tons of wood chips to make one ton
of pulp. The pulp is then washed and bleached; both stages require thousands of
gallons of clean water. Coloring is added to more water, and is then combined
in a ratio of 1 part pulp to 400 parts water, to make paper. The pulp/water
mixture is dumped into a web of bronze wires, and the water showers through,
leaving the pulp, which, in turn, is rolled into paper.
And that’s just to make the paper;
don’t forget about the energy inputs — chemical, electrical, and fossil
fuel-based — used to transport the raw material, turn the paper into a bag and
then transport the finished paper bag all over the world.
Where do
paper bags end their life?
When you’re done using paper
shopping bags, for shopping or other household reuses, a couple of things can
happen. They can be recycled in most mixed-paper recycling schemes огthey can be
thrown away. If you compost them, the bags break down and go from paper to a
rich soil nutrient over a period of a couple of months; if you throw them away,
they’ll eventually break down of the period of many, many years. If you choose
to recycle paper bags, then things get a little tricky. The paper must first be
re-pulped, bleached and separated the pulp fibers. The fibers are then cleaned
and screened to be sure they’re free of anything that would contaminate the
paper-making process, and are then washed to remove any leftover ink before
being pressed and rolled into paper, as before (it means more energy and
chemicals are used).
5.Оценивание.
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