Reading to learn: Experience sharing

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Reading to learn Experience sharing

• punkc2007_at_gmail.com

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Agenda

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

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Benzene in soft drinks

• When to introduce?
• After learning hydrocarbons?
• Can be related with news
• For NSS, benzene included

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Powerpoint

• Introducing the activity

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In case you would like to introduce this activity
in 2007

• ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (????,
  23/12/2006)
• ?????????? ?????? ?????? (??, 23/12/2006)
• Bottled Waters Contaminated with Antimony from
  PET (24 Jan 2006) http//www.uni-heidelberg.de/pre
  ss/news/news06/2601antime.html (accessed on
  23/12/2006)
• ?????????? (??, 9/4/2007)

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?????????? (9/4/2007)
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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 (gt 200 words)
• Total (Student) about 5 hours

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Teachers work

• Introducing the topic (within the lesson)
• Facilitating the forum in the role play (within
  the lesson)
• The critiques (About 2 - 3 hours)

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Reading to learn

• The first step would be

Learning to read
Chemistry from newspapers
Scientific literate
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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
Ming Pao, 27/11/2006
Sing Tao Daily, 27/11/2006
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Trans fat

• ? ? ? ? ? ? ? ? ? ? (????, 15/3/2007)
• ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
  ? ? (????, 14/3/2007)

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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.htm
  l
• http//www.rsc.org/Publishing/ChemScience/Volume/2
  007/02/trans_fat_free_future.asp

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Trans fats
http//www.people.umass.edu/ktheis/tfa.htm
accessed on 11/4/2007
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Trans fats (Cholesterol)
In NSS syllabus
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White gold vs. Platinum

• ???? ????????? (??, 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)

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Drugs

• ? ? ? ? ? ? ? ? ? ? ? ? (????, 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
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More examples from newspapers

• ? ? ? ? ? ? ? ? ? ? (????, 6/12/2006)

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More examples from newspapers

• ????????? ????? (??, 16/12/2006)
• ?????????? ??3?? ????????? (??, 23/12/2006)
• Nitrosamines
• R2N-NO
• Nitrites
• Links with instrumental techniques e.g. MS

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More examples in using newspapers

• ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (????,
  13/11/2006)
• Functional groups
• IR spectrum

http//www.chemexper.com/index.shtml?mainhttp//w
ww.chemexper.com/search/cas/85-86-9.html
accessed on 11/4/2007
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More examples in newspapers

• ??????? ???????
• (??, 8/12/2006)
• ??? (Dioxin)
• ???(DDT)
• ???(Dieldrin)
• ??????(PCBs)

Source (PCB) http//www.epa.gov/toxteam/pcbid/def
s.htm accessed on 11/4/2007
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More examples from newspaper

• ? ? ? ? ? ? ? ? 400 ?
• (????, 14/12/2006)
• ? ? ? ? ? ? ? ? ? ? ? (????, 16/12/2006)
• ???????????? ????????? (??, 16/12/2006 )
• ???????????? (??, 2/4/2007 )

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More examples from newspaper

• ? ? ? ? ? ? ? ? ? ? (????, 27/12/2006 )
• Nicotine C10H14N2.

Source http//www.chm.bris.ac.uk/motm/nicotine/E-
propriete.html accessed on 11/4/2007
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More examples from the newspaper

• 4?___? ??????? (??, 16/12/2006 )
• Vitamin K

Source Vitamin K1 http//arbl.cvmbs.colostate.edu
/hbooks/pathphys/misc_topics/vitamink.html Access
ed on 11/4/2007
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More examples in newspaper

• ??????????? (??, 25/12/2006)
• ?????????,??????,?????????
• ? ? ? ? ? ? ? ? (????, 24/12/2006)
• ? ? ? ? ? - ? ? ? ? ? ?, ? ? ? ?, ? ? ? ? ?
• ????????? ???????? ?????????? (??, 24/12/2006)
• ?????? ????29??? (??, 26/12/2006 )
• ?? ?????????????

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More examples

• ??PAAG????? (??, 28/12/2006)
• PAAG????? (????, 14/4/2006)
• Polyacrylamide Gel
• (? ? ? ? ? ?)
• Acrylamide Monomer
• (? ? ? ? ? ? ?)
• 30????? ?PAAG???? (??, 12/3/2007)
• PAAG??8???????? (??, 5/4/2007)
• ? ? ? ? ? ? ? ? ? ? ? ? (????, 28/12/2006)
• ?????
• ? ? ? ? ? ? ? ? ? ? (????, 28/12/2006)
• SO2

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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/publication
  s/chem/acrylamide_faqs/en/
• Related articles
• ??????(Acrylamide)?????????! Sciscape???? Apr 18
  2004 http//www.sciscape.org/news_detail.php?news_
  id1443
• Mechanism Underlying Formation of Possible Food
  Carcinogen Revealed Oct 2 2002 Scientific
  American http//www.sciam.com/article.cfm?chanIDs
  a003articleID000CC5E5-015A-1D9A-815A809EC5880000
  

All can be accessed on 11/4/2007
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Explosives

• ????????3? ???????????? (??, 28/12/2006 )
• ???????(TDI)
• ????????? (??, 11/3/2007)
• ???????????? (??, 3/4/2007 )

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TDI

• ????????3? ???????????? (??, 28/12/2006 )
• ???????(Tolylene diisocyanate,TDI)
• Analysis through GC-MS Source
  http//scholar.ilib.cn/Abstract.aspx?Afxcsxb2001
  04020 Accessed on 11/4/2007

Source http//www.answers.com/topic/isocyanate-2
accessed on 11/4/2007
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????? (??, 29/12/2006)

• Related news ??????????? (??, 29/12/2006)

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Some more examples

• ?????????? (??. 10/4/2007)
• ??????? ??????? (??, 10/4/2007) hydrogen as
  fuel
• ?????????? ??????? (?? , 11/4/2007)

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More examples

• ???321??5?? ??30?2???? (??, 5/3/2007)
• ? 321 ? ? ? ? ? ? ? ? ? ? ? ? ? (????, 5/3/2007)
• ????1????????? ????
• ????? (??, 1/4/2007)

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More examples Global warming

• ? ? ? ? ? ? ? 13 ? ? ? (????, 14/3/2007)
• ?????????????
• ??????????? (??, 14/3/2007)
• Useful references
• Climate change 2001 Synthesis report
• http//www.grida.no/climate/ipcc_tar/vol4/index.ht
  m (accessed on 11/4/2007)
• Films
• An Inconvenient Truth
• The Day after Tomorrow

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Some more examples (April, 2007)

• ?????????? ??????? ?????? (??, 1/4/2007)
• ????????? (??, 2/4/2007)
• ????????? (??, 2/4/2007)
• ????????10?? ????????????? (??, 7/4/2007)

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Some more examples (April, 2007)

• ???? ??????? ????5?????? (??, 3/4/2007)

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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/pres
  s_releases/list.html
• http//www.consumer.org.hk/website/ws_chi/news/pre
  ss_releases/list.html

All can be accessed on 11/4/2007.
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Local sources (as to date)
20070410

• ?? for two days
• http//www.mingpaonews.com/20070411/gbindex.htm
  Local news
• ???? from Jan 2002 onwards
• http//appledaily.atnext.com/template/apple/archiv
  e.cfm
• HKASME
• Yearly publications
• Wise news
• http//wisenews.wisers.net/index.jsp

All accessed on 11/4/2007
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Some remarks

• 1) Chemophobia

Penny Le Couteur 2005 ChemEd
Natural is good man-made is bad
ChemEd 2007 July 29 August 2007 University of
North Texas http//www.chem.unt.edu/chemed07/Secon
dary20Pages/menu.htm
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Some remarks

• 2) Generic skills mastered Knowledge gained
• Collaborative
• Critical thinking
• Communication (verbal written)
• And
• Knowledge acquisition
• Knowledge transfer
• Knowledge integration
• ..

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Some remarks

• 3) Worth?
• Thinking in different perspectives (divergent)
• Familiarise the students with unfamiliar
  situations
• Since articles are chemistry centred explore
  more
• Teachers work reasonable

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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

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Some remarks

• 5) Aware of fake science Alkali metals water
• http//video.google.com/videoplay?docid-213426665
  4801392897 (accessed on 11/4/2007)

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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 youre expecting to see the Open
  University, youre on the wrong channel
• its priority in executing them was
  entertainment.
• Nature Volume 445, 22 Feb 2007.

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Some remarks

• 6) Not only for NSS
• Also suitable for HKCEE HKAL
• Can prepare them for examinations
• At least scientific literate

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Final remark

• Get professional support from EDB.

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Thank You