Reading and Writing Tasks for Enhancing Students

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Reading and Writing Tasks for Enhancing Students
Learning of Chemistry
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Essay writing activities

• Identify the advantages and disadvantages of
  using synthetic polymers and metals in the
  construction industry.
• Compare two types of renewable energy resources.
• Explain why incineration is not a good method of
  disposal of solid waste in HK.

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General comments and recommendations for CE
Chemistry examination report

• The chemical knowledge required to answer the
  question has been acquired by most of the
  candidates. However, they failed to present their
  answers in a precise and systematic manner.
• ?????????????,????????????????????????????????????
  ???,????????

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The language of Chemistry- experimental report

• I have conducted an experiment of titrating
  dilute hydrochloric acid with dilute sodium
  hydroxide this afternoon. At the beginning, I
  pipetted 25 cm3 of sodium hydroxide of unknown
  concentration into a conical flaskFinally, after
  tedious calculation, I found that the
  concentration of the sodium hydroxide solution is
  0.10 M.

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The language of Chemistry- experimental report

1. Title
2. Objective e.g. To find
3. Principle
4. Procedures past tense, passive voice
5. Results and data analysis
6. Discussion
7. Conclusion relate to objective(s)

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The language of Chemistry

• Common text structures (genres) of
  science/Chemistry
• Descriptive report
• Procedural account
• Explanation
• Comparison
• Argument

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Reading writing activity- How to write a
comparison essay

• Reading an article about different renewable
  energy sources
• Discuss and complete a worksheet for analysing
  the language features and structure of the
  comparison essay
• Write an essay comparing two energy sources

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A planning tool for writing Graphic organizers

• A scaffold which provides important clues about
  how to organize the writing and the style of
  writing required.

Item 1
Item 2
Comparison
Both
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Graphic organizer for writing explanation essay
Cause 1
Causes Effects



Result
Cause 2
Cause 3
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A frame for supporting the writing of explanation
Structure Text
Phenomenon Identification
Explanation Sequence 1
Explanation Sequence 2
Explanation Sequence 3
Words expressing cause effect (example
Because, since, as, as a result, therefore, thus)
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Students work

• Before learning how to write causal explanation
• After learning how to write causal explanation

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• http//resources.edb.gov.hk/science/genre/index-c
  .html

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How to motivate our students?

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  ?????????????,???????????????
• ?????

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More writing tasks about contemporary issue

• Tests find concentration of active ingredient may
  be too low in some household bleaches (15 July
  2009)
• ???????????(2009?5?16?)

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Chemistry Teachers Professional Development and
Resource Sharing Platform
http//edblog.hkedcity.net/nsschem
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Thank You!

• Sophia Cheng
• Tel [phone]
• Email sophiaslcheng_at_edb.gov.hk