4.7 Ecologicalproblems  (Page 2/2)

Person 1:

mℓ wasted in 30 seconds

Person 2:

mℓ wasted in 30 seconds

AVERAGE:

Report back to the class. The teacher can write each group’s average on the board.

2. Diseases that can be related to the use of water

Divide the class into three groups.

Each group investigates one of the following with regard to the three most important diseases, namely cholera, bilharzia and diarrhoea:

a) causes of the disease;

b) symptoms;

c) treatment;

d) prevention of its spreading.

Finally, write a few sentences to summarize your conclusions with regard to water consumption, saving and conservation.

Assessment of RESEARCH PROJECT – WATER AUDIT

Were you able to PLAN and EXECUTE the project? Can you express your appreciation of water as a valuable resource? [LO 1.1; LO 1.2; LO 1.3; LO 3.1; LO 3.2]

Activity 3:

To be able to discuss the problem of pollution

[lo 2.2 lo 2.3]

Did you know?

POLLUTION happens in various ways. Make a list.

Identify and describe the pollution that is suggested by each of the following sketches:

Assessment: EXAMPLES OF POLLUTION

Were you able to identify and discuss the examples of pollution? [ LO 2.2; LO2.3]

Activity 4:

To be able to discuss recycling as a measure to avoid pollution

[lo 3.1, lo 3.2]

Think of as many examples as possible where material should be recycled. Present your ideas to the class. Listen to other ideas and write down the five that you consider to be best.

My ideas:

The FIVE best ideas from the class discussion:

How can the community be made aware of the ideas?

Man has the brain power and the technology to put an end to the worst mistakes that have been made in the past. However, it will need a combined effort – where we are all involved – to find solutions to all the problems. Once solutions have been found, we will have to engage in the long and challenging process of sustaining our efforts. It is our duty and responsibility to ensure that generations to come will inherit a healthy planet.

Therefore: think twice before you throw that piece of paper out of the window of the car, or if complain when your school announces a recycling programme.

Assessment of RECYCLING

Were you able to understand that man must continue his attempts at protecting his natural resources?

[LO 3.1, 3.2]

Assessment

LO 1: Scientific investigations:

The learner will be able to act confidently on curiosity about natural phenomena, and to investigate relationships and solve problems in scientific, technological and environmental contexts.

This is evident when the learner:

• plans investigations;
• conducts investigations and collects data;
• evaluates data and communicates findings.

LO 2: Constructing Science Knowlege:

The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

This is evident when the learner:

• categorises information;
• interprets information.

LO 3: Science, Society and the Environment

The learner will be able to demonstrate an understanding of the interrelationships between science and technology, society and the environment.

This is evident when the learner:

3.1 understands science as a human endeavour;

3.2 understands sustainable use of the earth’s resources.

Memorandum

Activity 1: Ecological problems and solutions

PROJECT: WATER AUDIT AT THE SCHOOL

• Form groups of 4. Plan the following:

1. How to determine water consumption at the school.

2. Determining how to represent the findings in a report.

3. The recommendations to be made.

Hand the completed report and findings to the teacher on the predetermined date.

Report-back by Groups. Final findings may be passed on to the school's management body.

Own memorandum

Assignment 1 : WATER WASTAGE AT TAPS

• Own memorandum

Assignment 2: CLASS DISCUSSION ON RECOMMENDATIONS

• Which recommendations dealing with water wastage at taps would you hand in together with the water audit that you submit to the school's governing body?
• List of recommendations:
• Own memorandum

Assignment: DISEASES LINKED TO WATER

POLLUTION occurs in various forms. Compile a list:

Oil, chemicals dumped by industry; plastic, car tyres, paper and rubbish littering; water and toxic substances; spraying of insecticides,

Assignment 4 : IDENTIFYING INSTANCES OF POLLUTION in an illustration:

• Memorandum for the illustration

Assignment 5 : POSTER ON POLLUTION

• Own memorandum

Assignment 6 : SUGGESTIONS FOR RECYCLING

• Own memorandum