Transcript Reading to learn: Experience sharing 1

Reading to learn:
Experience sharing
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1
Agenda

Experience sharing on role play activity

Reading to learn



Learning to read
Chemistry from Newspaper
Some remarks
2
Benzene in soft drinks

When to introduce?

After learning hydrocarbons?

Can be related with news

For NSS, “benzene” included
3
Powerpoint

Introducing the activity
4
In case you would like to introduce
this activity in Jan 2008,

Use more recent articles:


研究指汽水防腐劑可致柏金遜 損細胞致肝硬化 有害
攝取量未明 (明報, 28/5/2007)
英研究指含防腐添加劑
破壞細胞組織
飲 汽 水 可 致 肝 硬 化 (蘋果日報, 28/5/2007)
(明報, 28/5/2007)
5
You may use news regarding bottled
water for similar activity
加拿大研究顯示 樽裝水塑料釋有毒
物質
(蘋果日報, 23/12/2006)
 研究﹕樽裝水久放釋毒
膠樽釋化學物 時間愈
長愈濃 (明報, 23/12/2006)
 Bottled Waters Contaminated with
Antimony from PET (24 Jan 2006)
http://www.uniheidelberg.de/press/news/news06/2601an
time.html (accessed on 23/12/2006)
 膠樽水久存釋出金屬銻 (明報, 9/4/2007)

6
膠樽水久存釋出金屬銻 (9/4/2007)
7
Advertisement: Diamond water

http://www.youtube.com/watch?v=g9
JzIBKHIFA
Accessed on 3/1/2008
8
Another topic to consider

Treated water – good for health?

Related information: (Choice #357)


http://www.consumer.org.hk/website/ws_en/news/p
ress_releases/p35701.html (accessed on 3/1/2008)
http://www.consumer.org.hk/website/ws_chi/news/p
ress_releases/p35701.html (accessed on 3/1/2008)
9
Time required

Within the lessons (1 hour 45 minutes)

1 period



2 periods




15 minutes: group discussion
40 minutes: role play
15 minutes: summarise the points
After the lessons: (about 3 hours)



For introducing the activity and
Searching information in the internet
Searching information and discussion
Writing the critique (> 200 words)
Total (Student): about 5 hours
10
Teacher’s work

Introducing the topic (within the lesson)

Facilitating the forum in the role play
(within the lesson)

The critiques (About 2 - 3 hours)
11
Agenda

Experience sharing on role play activity

Reading to learn



Learning to read
Chemistry from Newspaper
Some remarks
12
Reading to learn

The first step would be
Learning to read
Chemistry from
newspapers
Scientific literate
13
Learning to read

“河上姹女，靈而最神。得火則飛，不見塵
埃。……. 將欲制之，黃芽為根。”
周易參同契 -中國古代煉丹術的重要典籍
14

“河上姹女，靈而最神。得火則飛，不見塵
埃。……. 將欲制之，黃芽為根。”
周易參同契 -中國古代煉丹術的重要典籍
[參者三也，同者通也，契者合也，是指周易思想、黃老道家和煉丹術三者歸一、殊途同歸的意思硫
姹女–汞 (即水銀)
黃芽–硫磺
[Hg + S →HgS]
Topic related: Metallic bond
15
萬樂珠加可樂短片熱爆網
(NSS, Topic I)

(蘋果日報, 8/6/2007)

Physical change vs. chemical change
16
Elements and compounds (NSS
Topic I)

廣 州 蟲 草 含 鉛 超 標 400 倍
(蘋果日報, 14/12/2006)
17
More examples from newspapers
(NSS, Topic II)

含 銅 廢 液 污 染 蛇 口 漁 港 (蘋果日報,
6/12/2006)
18
Related to syllabus (NSS Topic III)

Newspaper article:



美顏霜水銀超標 婦中毒入院 (明報. 9/6/2007)
女 子 用 美 顏 霜 中 水 銀 毒 (蘋果日報, 9/6/2007)
衛署籲停用嬌麗回春素孖裝 (明報. 10/6/2007)
19
Related with other subjects (NSS
Topic III)

警覺性

洛鉬 (Molybdeum)

洛鉬集團:欒川鉬礦田
 鉬金屬儲量位居世界六大鉬礦之首

鉬 (Mo)



原子序數是42，是一種過渡金屬
純金屬是銀白色
可使鋼變硬
資料來源﹕
http://zh.wikipedia.org/wiki/%E9%92%BC
3/1/2008
20
White gold vs. Platinum (NSS, Topic
III)

肉眼難辨 鉑金貴白色黃金逾倍 (明報, 4/4/2007)



White gold = gold + white metal (e.g. Pd, Ag)
Au750 (75% Au + 25% white metals)
Source:
http://en.wikipedia.org/wiki/White_gold
(accessed on 3/1/2008)
21
NSS Topic V (Fuels)

石油庫存急降 油價破百
(明報, 4/1/2008)
22
Fuels (Section V)
替車充電擺烏龍 布殊險引火自焚 (明報,
10/4/2007) [hydrogen as fuel]
23
Fuels (NSS Section V)
Source:蘋果日報, 3/1/2008
24
NSS Topic V (fuels)

建 液 化 天 然 氣 站 影 響 生 態 (蘋果日報,
16/12/2006)
中電天然氣站環評押後公布 環團反對選址大鴉
洲 (明報, 16/12/2006 )
 團體：中電環評避談漁業影響 (明報,
2/4/2007 )

25
Global warming



環團籲321熄燈5分鐘
暫有30校2萬人響應 (明
報, 5/3/2007)
「 321 」 行 動 熄 燈
五分鐘二萬人響應
(蘋果日報, 5/3/2007)
悉尼熄燈1小時反暖化
全城響應 歌劇院大
橋破例關燈 (明報,
1/4/2007)
26
Global warming

中 電 排 二 氧 化 碳 13 年 新 高 (星島日報,
14/3/2007)

中電:網上發表《可持續發展報告》
英擬立法減溫室氣體排放 (明報, 14/3/2007)
 Useful references:


Climate change 2001: Synthesis report
http://www.grida.no/climate/ipcc_tar/vol4/index.htm
(accessed on 3/1/2008)


Films


An Inconvenient Truth
The Day after Tomorrow
27
Global warming

2007年歷來第五熱 (明報, 4/1/2008)
28
Global warming

海水暖化 食魚中毒風險增 全球每年5萬人中雪卡
毒 (明報, 3/4/2007)
29
Global warming

web tech ： 致 電 冰 川 聽 死 亡 之 歌 (蘋果
日報, 9/6/2007) 07758-225698
http://news.scotsman.com/entertainment.
cfm?id=896472007 (accessed on
3/1/2008)
30
Issues from media

TVB Jade (Sunday, 11/11/2007 12:00
noon – 12:45 p.m.) [城市論壇 (City
Forum): Waiting: Should we turn off the
engine of the car?]
31
News in December 2007
United Nations Climate Change Conference Bali, 3 - 14 December 2007
http://unfccc.int/meetings/cop_13/items/4049.
php Accessed on 3/1/2008
32
Some more examples (Jun 2007)
(NSS Topic V)
運 煤 船 擱 淺 (蘋果日報, 9/6/2007)
可 抵 高 溫
棄後三月內分解
Green Apple ： 粟 米 芯 、 蔗 渣 膠 袋 救
地 球 (蘋果日報, 10/6/2007)

33
Topic VII (Chemical cells)
Apple Daily 29/11/2007
34
NSS (Topics V and XI)

小量酒精紓急性腦部創傷 (明報, 25/12/2006)
“研究並不是鼓勵飲酒，因為酒後駕駛，仍然是最危險的行為”

空 轉 引 擎 錢 損 環 境 (蘋果日報, 24/12/2006)
不 停 車 熄 匙 - 釋 出 二 氧 化 碳, 氮 氧 化 物, 一 氧 化 碳 等

政府油站九成未達標 汽油揮發有害氣體 私營油站需設回收系統 (明
報, 24/12/2006)

九巴廢油再造 每年相等29個泳池 (明報, 26/12/2006 )
廢油 :循環再造成再生機油及潤滑油
35
Chemistry in Newspaper (NSS
Topics V & XI)

Malachite green; sudan red; and
formaldehyde in fishes; eggs; and shark
fins respectively; trans-fat; white gold vs.
platinum
Ming Pao, 27/11/2006
Sing Tao Daily, 27/11/2006
Apple Daily, 25/11/2006
36
Related with examination questions

Malachite green (2007 AL Paper I
Question)
http://en.wikipedia.org/wiki/Malachite_gre
en (accessed on 3/1/2008)
http://zh.wikipedia.org/wiki/%E5%AD%9
4%E9%9B%80%E7%9F%B3%E7%B6%A
0 (accessed on 3/1/2008)
37
Trans fat (NSS, Topic XI)



立會
本報
食品
揀飲
日報,
通過促禁反
委託化驗
反式脂肪超
擇食：選牛
8/6/2007)
式
半
標
油
脂 肪 (蘋果日報, 15/3/2007)
數樣本危害健康 快餐店
(蘋果日報, 14/3/2007)
不 能 只 看 反 式 脂 肪 (蘋果
38
News in Oct 16 2007 (Choice #372)
39
反 式 脂 肪 擬 納 營 養 標 籤 (蘋果日報,
26/10/2007) Trans-fat to be labelled?
40
Trans fats - Chemical knowledge
Trans fats – partially hydrogenated
vegetable oils
 Cholesterol
 Hydrogenation
 Useful websites for trans-fats



http://www.fda.gov/FDAC/features/2003/503_
fats.html (accessed on 3/1/2008)
http://www.rsc.org/Publishing/ChemScience/V
olume/2007/02/trans_fat_free_future.asp
(accessed on 3/1/2008)
41
Trans fats
http://www.people.umass.
edu/ktheis/tfa.htm
accessed on 3/1/2008
42
Cholesterol (NSS, Topic XI)
http://en.wikipedia.org/wiki/Chole
sterol (accessed on 3/1/2008)
43
Drugs (NSS, Topic XI)

港人濫用減肥藥全
球 排 第 五 (蘋果日報,
14/3/2007)

Phentermine
http://en.wikipedia.org/wiki/Phentermine accessed on 3/1/2008

Amfepramone
http://www.chemindustry.com/
chemicals/681059.html
accessed on 3/1/2008
44
Drugs (NSS, Topic XI)
Tamiflu: 2 Jun 2006 Sing Tao Daily
 Oseltamivir:
http://en.wikipedia.org/wiki/Oseltamivir
(accessed on
3/1/2008)

45
Drugs (NSS, Topic XI)

女子疑公廁賣K仔被捕 (明報, 4/1/2008)
H3C
NH
Cl
Ketamine
46
Me
Other dangerous drugs: GHB (Gamma
hydroxybutyrate, 迷姦水 )

Originally used as a sleep-aid
HO
O
OH
47
「吹波波」 (明報, 29/12/2006)
(NSS, Topic XI)

Related news: 「吹波波」手機專測醉駕 (明報,
29/12/2006)
48
More examples from newspapers
(NSS Topic XI)


打邊爐落腸仔午餐肉
增患癌風險 (明報,
16/12/2006)
深圳無牌廠毒鹽製香腸
日產3萬條 政府掃蕩前聞
風先遁 (明報,
23/12/2006)

Nitrosamines



R2N-N=O
Nitrites
Links with instrumental
techniques: e.g. MS
(NSS Topic XV)
49
More examples in newspapers
(NSS Topic XI)

適當煮魚去皮脂 可除六成致癌物
(明報, 8/12/2006)
二噁英 (Dioxin)
滴滴涕(DDT)
地特靈(Dieldrin)
多氯化聯苯基(PCBs)
Source (PCB):
http://www.epa.gov/toxteam/pcbid/defs.
htm [accessed on 10/6/2007]
50
More examples from newspaper
(NSS Topic XI)

戒煙香口膠亂食易中毒
27/12/2006 )
Nicotine C10H14N2.
(星島日報,
Source:
http://www.chm.bris.ac.u
k/motm/nicotine/Epropriete.html [accessed
on 10/6/2007]
51
More examples in using newspapers
(NSS Topic XI)

港蛋販指河北蛋黃
確比以前紅 蘇丹紅
鴨 蛋 致 癌 (蘋果日報,
13/11/2006)

Functional groups
http://www.chemexper.com/index.shtml?
main=http://www.chemexper.com/search/
cas/85-86-9.html [accessed on 3/1/2008]52
Some more examples (Jun, 2007)
(NSS, Topic XI)
美長跑小天后
過量用按摩膏
中冬
青 油 毒 死 (蘋果日報, 11/6/2007)
 美少女塗止痛膏暴斃
過量使用冬青油超標6倍
本港亦有售 (明報, 11/6/2007)
methyl salicylate

53
Polymers (Topic XIV)





深圳PAAG案發回重審 (明報, 28/12/2006)
PAAG傷神經系統 (蘋果日報, 14/4/2006)
Polyacrylamide Gel
(聚 丙 烯 胺 凝 膠）
Acrylamide Monomer
(單 體 :丙 烯 胺 單 體）
30年消委先鋒 揭PAAG引以為榮 (明報, 12/3/2007)
PAAG隆胸8宗私院「執手尾」 (明報, 5/4/2007)
大 鴉 洲 建 氣 站 損 生 態 詢 公 眾 (星島日報, 28/12/2006)
液化天然氣
廣 東 毒 糖 果 或 流 入 本 港 (蘋果日報, 28/12/2006)
SO2
54
PAAG
Acrylamide? (Choice #372, October 15 2007)
“Acrylamide is a chemical that is used to make
polyacrylamide materials. Polyacrylamide is used in the
treatment of drinking-water and waste water where it
is used to remove particles and other impurities …...
Polyacrylamide materials contain very small amounts of
acrylamide.”
 Problem?
“Acrylamide is known to cause cancer in animals……”
[Source: http://www.who.int/foodsafety/publications/chem/acrylamide_faqs/en/]
Related articles:
醫學：丙烯醯胺(Acrylamide)致不致癌？爭議不斷！ Sciscape新聞
報導 Apr 18 2004 http://www.sciscape.org/news_detail.php?news_id=1443
Mechanism Underlying Formation of Possible Food Carcinogen
Revealed Oct 2 2002 Scientific American

http://www.sciam.com/article.cfm?chanID=sa003&articleID=000CC5E5-015A-1D9A815A809EC5880000]
All can be accessed on 3/1/2008
55
Explosives (NSS Topic XV)
甘肅兵工廠爆炸埋3人 隸屬全國最大武備生產集
團 (明報, 28/12/2006 )
 甲苯二異氰酸酯(TDI)
 無牌爆竹廠炸死工人 (明報, 11/3/2007)
 深圳化學品倉庫爆炸無傷亡 (明報, 3/4/2007 )

56
TDI (NSS, Topic XV)

甘肅兵工廠爆炸埋3人 隸屬全國最大武備生產集
團 (明報, 28/12/2006 )
甲苯二異氰酸酯(Tolylene
diisocyanate,TDI)
Analysis through GC-MS [Source:
]
http://scholar.ilib.cn/Abstract.aspx?A=fxcsxb200104020 Accessed on 3/1/2008
[Source: http://www.answers.com/topic/isocyanate-2 accessed on 3/1/2008]
57
Some useful urls & search engine

Centre for Food Safety



Department of Health



http://www.cfs.gov.hk/english/press/press_e.html
http://www.cfs.gov.hk/tc_chi/press/press_c.html
http://www.dh.gov.hk/tc_chi/press/press.html
http://www.dh.gov.hk/english/press/press.html
Consumer Council


http://www.consumer.org.hk/website/ws_en/news/pres
s_releases/list.html
http://www.consumer.org.hk/website/ws_chi/news/pres
s_releases/list.html
All can be accessed on 3/1/2008.
58
Local sources (as to date)

明報 for two days


http://appledaily.atnext.com/template/apple/a
rchive.cfm?
HKASME


http://www.mingpaonews.com/20080104/gbin
dex.htm [Local news]
蘋果日報 from Jan 2002 onwards


20080103
Yearly publications
Wise news

http://wisenews.wisers.net/index.jsp
All accessed on 3/1/2008
59
Newspaper (free)

BBC News http://news.bbc.co.uk/
(accessed on 3/1/2008)
60
Poster from Customers & excise Department
61
Poster from Customers & excise Department
(http://www.isomerdesign.com/Cdsa/scheduleUN.php?schedule=3&section=ALL&structure=C accessed on 28/12/2007)
62
Other Resources

2 – 7 minutes of
video clips of various
topics
BBC Motion Gallery
63
Agenda

Experience sharing on role play activity

Reading to learn



Learning to read
Chemistry from Newspaper
Some remarks
64
Some remarks

1) Chemophobia:
Penny Le Couteur 2005 ChemEd
“Natural is good;
man-made is bad”
65
Some remarks

2) Generic skills mastered & Knowledge
gained
Collaborative
 Critical thinking
 Communication (verbal + written)
And
 Knowledge acquisition
 Knowledge transfer
 Knowledge integration
 …..

66
Some remarks

3) Worth?




Thinking in different perspectives (divergent)
Familiarise the students with unfamiliar
situations
Since articles are chemistry centred: explore
more
Teacher’s work: reasonable
67
Some remarks

4) Other issues may be discussed:
So many poisonous food substances: Why???
May be
“We live in a world so rich that global income is
more than $31 trillion a year. In this world,
the average person in some countries earns
more than $40,000 a year. But in this same
world, 2.8 billion people – more than half the
people in the developing countries – live on less
than $700 a year. Of these, 1.2 billion earn
less than $1 a day.”
Source: http://www.worldbank.org
68
Some remarks

5) Aware of fake science: Alkali metals +
water
 http://video.google.com/videoplay?doci
d=-2134266654801392897 (accessed
on 3/1/2008)
69
Some remarks

P.805 Second last paragraph
“… admitted that in an episode claiming to show
a bathtub of water being blown up by caesium
and rubidium, explosives were used instead.”
Sky One “If you’re expecting to see the Open
University, you’re on the wrong channel”
“… its priority in executing them was
entertainment.”
Nature Volume 445, 22 Feb 2007.
70
Some remarks

6) Not only for NSS



Also suitable for HKCEE & HKAL
Can prepare them for examinations
At least scientific literate
71
Final remark

Get professional support from EDB.
72
Thank You
73