Teaching strategies Teaching strategies

forfor

exploring issues in STSE exploring issues in STSE contextscontexts

Teaching strategies Teaching strategies

forfor

exploring issues in STSE exploring issues in STSE contextscontexts

What is the issue? What is the issue?

Why does this issue arise?Why does this issue arise?

What are the different views?What are the different views?

How to make informed How to make informed judgements judgements or decisions?or decisions?

What is the issue? Why does this issue arise? What are the different views? How to make informed judgements or decisions?

Issue-enquiry approachIssue-enquiry approachHow to search & analyse relevant information?

Is the information a fact or an opinion?How strong is the

evidence?

What is the issue? Why does this issue arise? What are the different views? How to make informed judgements or decisions?

Issue-enquiry approachIssue-enquiry approach What are the values / attitudes?

What is the issue? Why does this issue arise? What are the different views? How to make informed judgements or decisions?

Issue-enquiry approachIssue-enquiry approach

Any consensus?

How to resolve the conflicts?

Who makes the decision?

Scientific knowledge?Information search

Analysis & discussion

Understand the issue

Identify the issue

全球暖化全球暖化

The greenhouse effectPractical Practical activitieactivitie

ss

years

Carbon dioxide emission(thousand millions of tonnes per year)

20

10

1860 1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990

years

1860 1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990

15.4

15.0

14.6

Temperature of Earth's atmosphere (C)

How to analyse

the

information?

years

Carbon dioxide emission(thousand millions of tonnes per year)

20

10

1860 1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990

years

1860 1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990

15.4

15.0

14.6

Temperature of Earth's atmosphere (C)

Evidence for global

warming?

Evidence against global

warming?

years

Carbon dioxide emission(thousand millions of tonnes per year)

20

10

1860 1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990

years

1860 1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990

15.4

15.0

14.6

Temperature of Earth's atmosphere (C)

Further information?

People at stake

Views Attitude / standpoint

Values

Scientists Global warming – abnormal weather, loss of land, extinction of organisms

Reduce use of fossil fuels;exploit renewable energy sources

Balance of ecosystem(environmental)

Scientists(alternative view)

Crops grow better No sufficient evidence to support global warming

Power station

Cheaper electricity with coal

Other ways – not cost effective

profit(economic)

AgricultureFurniture manufacturerGreen groups, citizens,Councillors, government officials

Environmental; ethical Economic Political

People at stake

Views Attitude / standpoint

Values

Scientists Global warming – abnormal weather, loss of land, extinction of organisms

Reduce use of fossil fuels;exploit renewable energy sources

Balance of ecosystem

Scientists(alternative view)

Crops grow better No sufficient evidence to support global warming

Power station

Cheaper electricity with coal

Other ways – not cost effective

profit

AgricultureFurniture manufacturerGreen groups, citizens,Councillors, government officials

Environ.EconomicPolitical

多角度思考 ( 跨科目 )

培養正面的價值觀和積極的態度

作出有理據支持的判斷、決定

多角度思考 ( 跨科目 )

培養正面的價值觀和積極的態度

作出有理據支持的判斷、決定

Development CompassEffects on the environment/ecology/weather? Solutions?

How to consult?

How to balance the interests of different groups?

How to reach a consensus?

Who makes the decision?

The cost?

Economic development? Quality of life?

Views of different parties of community?

Social problems?

How to cope with global warming?

Natural

Who decides?

Economic

Social

Acid rain

Air pollution

Disposal of solid wastes?

Building incinerators? Tax on plastic bags? Policy to reduce waste production?

Ozone depletion

Renewable energy

How to ensure sustainable development?

Development Compass

酸雨問題

Natural

Who decides?

Economic

Social

空氣污染焚化爐膠袋稅落馬洲支線

塱原濕地與可持續發展塱原濕地與可持續發展

Development CompassDevelopment CompassHow is the bypass changing the environment?

Who decided to build the bypass?

What influenced them?

Were the residents consulted?

Who is paying for the bypass?

How will it affect the interest of the residents?

Who will benefit from the bypass?

Who will be disadvantaged by it?

Building a bypass across Long Valley

Natural

Who decides?

Economic

Social

How could it landscaped?

Activities based on Texts or VideosActivities based on Texts or Videos

e.g. understanding & discussion guided by

questions

- Particularly useful for issues related to

biotechnology, health & diseases.

e.g. issues on test-tube babies

Role play/debateRole play/debate – for controversial issues

GM food – consumers and labelling? e.g. 城市論壇GM organisms

Vaccination – pros and cons

Application of DNA technology, Human Genome Project

Patients – Rights & responsibilities

Drug testing using humans & animals

Man cleared by DNA tests was freed after 17 years in prisonLonnie Erby was convicted of raping three girls in 1985. He was sentenced to 115 years in prison. After Erby had served 17 years in prison, a DNA fingerprinting analysis of preserved semen taken from the victims was performed ….Judge Jimmie Edwards said to Erby, “I’m sorry for your wrongful conviction. As you know, the science of today is not the science of yesterday.”