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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

Questions & Answers

what is mutation
Janga Reply
what is a cell
Sifune Reply
how is urine form
Sifune
what is antagonism?
mahase Reply
classification of plants, gymnosperm features.
Linsy Reply
what is the features of gymnosperm
Linsy
how many types of solid did we have
Samuel Reply
what is an ionic bond
Samuel
What is Atoms
Daprince Reply
what is fallopian tube
Merolyn
what is bladder
Merolyn
what's bulbourethral gland
Eduek Reply
urine is formed in the nephron of the renal medulla in the kidney. It starts from filtration, then selective reabsorption and finally secretion
onuoha Reply
State the evolution relation and relevance between endoplasmic reticulum and cytoskeleton as it relates to cell.
Jeremiah
what is heart
Konadu Reply
how is urine formed in human
Konadu
how is urine formed in human
Rahma
what is the diference between a cavity and a canal
Pelagie Reply
what is the causative agent of malaria
Diamond
malaria is caused by an insect called mosquito.
Naomi
Malaria is cause by female anopheles mosquito
Isaac
Malaria is caused by plasmodium Female anopheles mosquitoe is d carrier
Olalekan
a canal is more needed in a root but a cavity is a bad effect
Commander
what are pathogens
Don Reply
In biology, a pathogen (Greek: πάθος pathos "suffering", "passion" and -γενής -genēs "producer of") in the oldest and broadest sense, is anything that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term pathogen came into use in the 1880s.[1][2
Zainab
A virus
Commander
Definition of respiration
Muhsin Reply
respiration is the process in which we breath in oxygen and breath out carbon dioxide
Achor
how are lungs work
Commander
where does digestion begins
Achiri Reply
in the mouth
EZEKIEL
what are the functions of follicle stimulating harmones?
Rashima Reply
stimulates the follicle to release the mature ovum into the oviduct
Davonte
what are the functions of Endocrine and pituitary gland
Chinaza
endocrine secrete hormone and regulate body process
Achor
while pituitary gland is an example of endocrine system and it's found in the Brain
Achor
what's biology?
Egbodo Reply
Biology is the study of living organisms, divided into many specialized field that cover their morphology, physiology,anatomy, behaviour,origin and distribution.
Lisah
biology is the study of life.
Alfreda
Biology is the study of how living organisms live and survive in a specific environment
Sifune
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Source:  OpenStax, Natural sciences grade 8. OpenStax CNX. Sep 12, 2009 Download for free at http://cnx.org/content/col11050/1.1
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