Reading to learn: Experience sharing: Reading to learn: Experience sharing punkc2007@gmail.com


Agenda: Agenda Experience sharing on role play activity Reading to learn Learning to read Chemistry from Newspaper Some remarks


Benzene in soft drinks: Benzene in soft drinks When to introduce? After learning hydrocarbons? Can be related with news For NSS, “benzene” included


Powerpoint: Powerpoint Introducing the activity


In case you would like to introduce this activity in 2007: In case you would like to introduce this activity in 2007 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.uni-heidelberg.de/press/news/news06/2601antime.html (accessed on 23/12/2006) 膠樽水久存釋出金屬銻 (明報, 9/4/2007)


膠樽水久存釋出金屬銻 (9/4/2007): 膠樽水久存釋出金屬銻 (9/4/2007)


Time required: Time required Within the lessons (1 hour 45 minutes) 1 period For introducing the activity and Searching information in the internet 2 periods 15 minutes: group discussion 40 minutes: role play 15 minutes: summarise the points After the lessons: (about 3 hours) Searching information and discussion Writing the critique (> 200 words) Total (Student): about 5 hours


Teacher’s work: 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)


Reading to learn: Reading to learn The first step would be Learning to read Chemistry from newspapers Scientific literate


Chemistry in Newspaper: Chemistry in Newspaper Malachite green; sudan red; and formaldehyde in fishes; eggs; and shark fins respectively; trans-fat; white gold vs. platinum Apple Daily, 25/11/2006 Sing Tao Daily, 27/11/2006 Ming Pao, 27/11/2006


Trans fat: Trans fat 立 會 通 過 促 禁 反 式 脂 肪 (蘋果日報, 15/3/2007) 本 報 委 託 化 驗 　 半 數 樣 本 危 害 健 康 快 餐 店 食 品 反 式 脂 肪 超 標 (蘋果日報, 14/3/2007)


Trans fats - Chemical knowledge: 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 http://www.rsc.org/Publishing/ChemScience/Volume/2007/02/trans_fat_free_future.asp


Trans fats: Trans fats http://www.people.umass.edu/ktheis/tfa.htm accessed on 11/4/2007


Trans fats (Cholesterol): Trans fats (Cholesterol) In NSS syllabus


White gold vs. Platinum: White gold vs. Platinum 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 11/4/2007)


Drugs: Drugs 港 人 濫 用 減 肥 藥 全 球 排 第 五 (蘋果日報, 14/3/2007) Phentermine Amfepramone http://en.wikipedia.org/wiki/Phentermine accessed on 11/4/2007 http://www.chemindustry.com/chemicals/681059.html accessed on 11/4/2007


More examples from newspapers: More examples from newspapers 含 銅 廢 液 污 染 蛇 口 漁 港 (蘋果日報, 6/12/2006)


More examples from newspapers: More examples from newspapers 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


More examples in using newspapers: More examples in using newspapers 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 IR spectrum http://www.chemexper.com/index.shtml?main=http://www.chemexper.com/search/cas/85-86-9.html [accessed on 11/4/2007]


More examples in newspapers: More examples in newspapers 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 11/4/2007]


More examples from newspaper: More examples from newspaper 廣 州 蟲 草 含 鉛 超 標 400 倍 (蘋果日報, 14/12/2006) 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 )


More examples from newspaper: More examples from newspaper 戒 煙 香 口 膠 亂 食 易 中 毒 (星島日報, 27/12/2006 ) Nicotine C10H14N2. Source: http://www.chm.bris.ac.uk/motm/nicotine/E-propriete.html [accessed on 11/4/2007]


More examples from the newspaper: More examples from the newspaper 4款___奶 或影響心臟病人 (明報, 16/12/2006 ) Vitamin K Source: Vitamin K1 http://arbl.cvmbs.colostate.edu/hbooks/pathphys/misc_topics/vitamink.html [Accessed on 11/4/2007]


More examples in newspaper: More examples in newspaper 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


More examples: More examples 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


PAAG: PAAG Acrylamide? “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-1D9A-815A809EC5880000] All can be accessed on 11/4/2007


Explosives: Explosives 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 )


TDI: TDI 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 11/4/2007] [Source: http://www.answers.com/topic/isocyanate-2 accessed on 11/4/2007]


「吹波波」 (明報, 29/12/2006) : 「吹波波」 (明報, 29/12/2006) Related news: 「吹波波」手機專測醉駕 (明報, 29/12/2006)


Some more examples: Some more examples 台暖化快全球水平逾倍 (明報. 10/4/2007) 替車充電擺烏龍 布殊險引火自焚 (明報, 10/4/2007) [hydrogen as fuel] 食物防腐劑規管擬擴大 最快年底交立會 (明報 , 11/4/2007)


More examples: More examples 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)


More examples: Global warming: More examples: 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 11/4/2007) Films An Inconvenient Truth The Day after Tomorrow


Some more examples (April, 2007): Some more examples (April, 2007) 兩技工命喪毒氣密閉艙 工友含膠喉呼吸 冒死下艙相救 (明報, 1/4/2007) 福建一款米通鉛超標 (明報, 2/4/2007) 全球暖化威脅紅酒業 (明報, 2/4/2007) 全球暖化危及亞洲10億人 珠三角「鹽浸」影響港糧供應 (明報, 7/4/2007)


Some more examples (April, 2007): Some more examples (April, 2007) 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)


Some useful urls & search engine: Some useful urls & search engine Centre for Food Safety http://www.cfs.gov.hk/english/press/press_e.html http://www.cfs.gov.hk/tc_chi/press/press_c.html Department of Health 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/press_releases/list.html http://www.consumer.org.hk/website/ws_chi/news/press_releases/list.html All can be accessed on 11/4/2007.


Local sources (as to date): Local sources (as to date) 明報 for two days http://www.mingpaonews.com/20070411/gbindex.htm [Local news] 蘋果日報 from Jan 2002 onwards http://appledaily.atnext.com/template/apple/archive.cfm HKASME Yearly publications Wise news http://wisenews.wisers.net/index.jsp 20070410 All accessed on 11/4/2007


Some remarks: Some remarks 1) Chemophobia: “Natural is good; man-made is bad” Penny Le Couteur 2005 ChemEd ChemEd 2007 July 29 – August 2007 University of North Texas http://www.chem.unt.edu/chemed07/Secondary%20Pages/menu.htm


Some remarks: Some remarks 2) Generic skills mastered & Knowledge gained Collaborative Critical thinking Communication (verbal + written) And Knowledge acquisition Knowledge transfer Knowledge integration …..


Some remarks: 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


Some remarks: 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 accessed on 7/4/2007]


Some remarks: Some remarks 5) Aware of fake science: Alkali metals + water http://video.google.com/videoplay?docid=-2134266654801392897 (accessed on 11/4/2007)


Some remarks: 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.


Some remarks: Some remarks 6) Not only for NSS Also suitable for HKCEE & HKAL Can prepare them for examinations At least scientific literate


Final remark: Final remark Get professional support from EDB.


Slide45: Thank You