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Life skills

Grade 2

Journeys

Module 6

Water

Why did you have to move backwards for drinking from the stream? discuss why this was wrong.

Water

READ THE FOLLOWING:

Water from streams is not always clean. There are many ways in which it can become contaminated. If it is near a small village, it may be used for washing and cleaning and the dirty water is thrown back into the river.

If it is near a town, factories may use the water and pump their waste back into the river. Even if humans are not contaminating the water, there may be many little creatures or germs in the water that are harmful to humans.

Think of ways to make the water safe to drink. Write them here and then discuss your answers with your teacher.

We purify water!

The water that we get in our taps has been purified, so that it is safe to drink. Chemicals have been added to make sure that germs cannot live in it. The simplest part of the water purification is filtering. Filtering is a process, which works like a strainer or a sieve and prevents the larger objects from passing through.

Your teacher will give you some dirty water. See if you can make your own filter to clean it.

What will you use? List your apparatus.

  • What will you do?
  • What do you think will happen?
  • Draw and label your experiment.
  • Your layers will prevent the worst of the dirt getting through to your container. Naturally you cannot drink this water, as the germs are tiny enough to slip through your filter.
  • What do you think will get rid of the germs?

Assessment

Learning Outcomes(LO’s)
LIFE ORIENTATIONLO 1
HEALTH PROMOTIONThe learner will be able to make informed decisions regarding personal, community and environmental health.
Assessment Standards(ASs)
We know this when the learner:
1.1 describes sources of clean and unclean water and simple water purification methods;1.2 suggests and investigates actions to make the home and school environment healthier;1.4 identifies road signs relevant to pedestrians and explains their meaning..
emsLO 1
THE ECONOMIC CYCLEThe learner will be able to demonstrate knowledge and understanding of the economic cycle within the context of ‘the economic problem’.
Assessment Standards(ASs)
We know this when the learner:
1.5 expresses the importance and ways of saving and not wasting money and other resources such as water and electricity.
NATURAL SCIENCELO 1
SCIENTIFIC INVESTIGATIONSThe learner will be able to act confidently on curiosity about natural phenomena, and solve problems in scientific, technological and environmental contexts.
Assessment Standards(ASs)
We know this when the learner:
1.1 Plans : plans an investigation as part of a group;1.2 Does : participates in planned activity independently or as part of a group;1.3 Reviews : shows and explains what was intended and how it was done.
ARTS AND CULTURELO 4
EXPRESSING AND COMMUNICATINGThe learner will be able to analyse and use multiple forms of communication and expression in Arts and Culture.
Assessment Standards(ASs)
We know this when the learner:
4.3 Drama : uses puppets, animated stones, mealie cobs or other objects in dramatic play to express own ideas and feelings;4.6 Composite : talks about what the learner has seen and heard in own environment that has been of significance to self.

Memorandum

  • Our journeys can also take us into the countryside. This can bring us into contact with unclean water and the importance of clean water.
  • Stress the importance of water as a precious resource in our lives (especially in a country like South Africa where we often experience periods of drought) and that we need to save and not waste it. Discuss another resource that we often take for granted: electricity. These resources should be used with respect just as we need to save or use our money wisely.
  • Ask the learners to think of ways of saving water and electricity in their own homes. Remind them that in this way they are also saving money! (EMS 1.5).
  • Let the learners try to think of a slogan or jingle to remind them not to waste, something like “An apple a day keeps the doctor away”. If they want others to always close the tap properly, they must try to find a rhyme with “tap” and “water” to make their friends close the tap, e.g. “Close it well, leave no drops to tell”, or in the case of switching off the lights, “Have you flipped a switch today?”
  • Explain that for some people the lack of water or running water is a serious issue. If this is a problem in your area, use the task described in the activity as your next assignment. If not, try to identify an environmental issue in your community, whether it be some traffic hazard, a pollution problem or something else that the learners are exposed to.
  • Let them have a group brain storming session about the factors causing or leading to this issue. Give each group a large sheet of paper so that they can list the causes. Then let them establish who is affected by the problem and suggest a solution.
  • They will therefore
  1. identify an issue;
  2. list possible causes;
  3. find out who is affected;
  4. propose a solution.

(GEOG. 1.4; A&C 4 Composite).

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Life skills grade 2. OpenStax CNX. Sep 21, 2009 Download for free at http://cnx.org/content/col11105/1.1
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