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Reading and Writing Tasks for Enhancing Students

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Reading and Writing Tasks for Enhancing Students Learning of Chemistry – PowerPoint PPT presentation

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Title: Reading and Writing Tasks for Enhancing Students


1
Reading and Writing Tasks for Enhancing Students
Learning of Chemistry
2
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.

3
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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.
  • ?????????????,????????????????????????????????????
    ???,????????

5
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.

6
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)

7
The language of Chemistry
  • Common text structures (genres) of
    science/Chemistry
  • Descriptive report
  • Procedural account
  • Explanation
  • Comparison
  • Argument

8
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9
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
14
Graphic organizer for writing explanation essay
Cause 1
Causes Effects



Result
Cause 2
Cause 3
15
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)
16
Students work
  • Before learning how to write causal explanation
  • After learning how to write causal explanation

17
  • http//resources.edb.gov.hk/science/genre/index-c
    .html

18
How to motivate our students?
  • ???????????????????????????????,???????,??????????
    ?????????????,???????????????
  • ?????

19
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20
??????????????? ??????(???)
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?? ?????????,?250????????????????
25
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?)

Watch news
Ask questions
Read related article
Answer questions and discuss
Write an essay
26
Chemistry Teachers Professional Development and
Resource Sharing Platform
http//edblog.hkedcity.net/nsschem
27
Thank You!
  • Sophia Cheng
  • Tel 3698 3439
  • Email sophiaslcheng_at_edb.gov.hk
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