Plastic is manufactured by the polymerization
process, which connects monomers to create polymers. Common types of polymers in
our lives are presented in the table below:
Examples
polymer
Monomer
Bottles
Poly ethylene
Ethylene
Rigid pipes
Poly vinyl chloride
Vinyl chloride
folders
Poly propylene
Propylene
Styrofoam
Poly styrene
Styrene
Polymers can negatively impact the
environment: causing air pollution, groundwater and surface water pollution, and interfering with the food chain in marine environments. One way to reduce the negative
impacts of plastics on the environment is
by recycling.
The following table presents the
rate of plastic recycling in Israel (2013):
Recycling (percentage)
Waste Quantity
(1000 ton/yr)
Type of waste
Source
48%
41
Bottles (Bottle Deposit Law)
Packaging
0%
30
Plastic bags (after use)
6%
155
Other Plastic Packaging
64%
11
Mostly greenhouse tarps, containers
Agriculture
0%
18
plastic components
Electronics
0%
2
plastic parts
Vehicles
25%
257
-
Total
Which source gives us the smallest amount of plastic waste? (look only at plastic wastes subject to recycling, ie. not 0%)
You decided to talk about an important issue, recycling plastic, the video is wonderful, and it illustrates the process of recycling plastic.
The first table is also important, but it contains much information for students at middle school. I think they aren't able to understand the term monomer for example, so I suggest you to keep the examples row with the great pictures and that will be sufficient.
The point on the map is suitable to the issue and it also illustrates the process of recycling plastic at the factory at Neot Hoviv-Isreal.
Check the
map, I added a new point with appropriate information
את אכן צודקת, הוספת ידע רב במסגרת השאלה. דעתי הינה כי תלמידים
לומדים גם במבחן ולכן חשיפתם לידע במסגרתו תורמת להבניית הידע אצל התלמיד. חשבתי
אולי כדאי לצמצם את הנתונים בטבלה הראשונה, אולם, לבסוף החלטתי להשאירם כיוון שמעבר
להבניית ידע, על התלמיד לדעת לרכוש מיומנות סינון ואיתור הידע הרלוונטי.
בכל מקרה, שוב תודה,
בברכה
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