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1. The following activity is for your portfolio.

Look carefully at the assessment table before you begin – your teacher will allocate a code from 1 - 4 for the different sections.

Challenge!

1.1 Carry out a survey in your class and find out how many learners read which magazines. Write you information down in a table, e.g.

Magazine You Time SA Runner Fair Lady
Number of learners ................. ................ ................. .................

1.2 Now show the information by means of a pie diagram.

1.3 Answer the following questions:

a) Which magazine is the most popular?

b) Which magazine is read the least?

c) Which magazine is YOUR favourite?

Why?

BRAIN–TEASER!

Who am I?

a) If you subtract me from 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {} , you will get 3 8 size 12{ { { size 8{3} } over { size 8{8} } } } {}

b) If you cut me into sixths, you will have 24 6 size 12{ { { size 8{"24"} } over { size 8{6} } } } {}

c) If you double me, you will get 4 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {}

  1. If you halve me, you will get 2 1 12 size 12{2 { { size 8{1} } over { size 8{"12"} } } } {}
  2. If you calculate 3 4 size 12{ { { size 8{3} } over { size 8{4} } } } {} of me, you will get 12

Activity 5:

To solve problems in context [lo 1.6.1]

Split up into groups of three. You will be given the necessary paper to work on. Remember to discuss the solutions amongst yourselves beforehand and then you can do them neatly on paper.

1. Mrs Mvusi buys 7 metres of material. If she wants to make each one of her four children a bright cushion for his or her room, how many metres of material can she use for each one? (All the cushions are of the same size.) Give each answer as a fraction.

2. Mr Muruvan buys 9 pieces of dry sausage that he wants to share equally among himself, his wife and their five children. What fraction of the sausage will each one get?

3. Grandpa Ben would like to divide R30 equally among his four grandchildren. What is the amount each one will get?

a) Did she divide it fairly?

b) What fraction does each person get?

c) Write your answer as an improper fraction:

1.3 Sketch the solutions to the following:

a) Divide eight fizzers equally between five children.

b) Divide five milk tarts equally between 12 guests.

1.4 Calculate the following:

a) Divide R5,00 equally between four children.

b) Divide 13 pies equally between eight learners.

Activity 6:

To use a series of techniques to do calculations [lo 1.10.5]

1. It is important for us to know how to key in ordinary fractions on a pocket calculator. This will help us find the answers to problems in no time.

Did you know?

If you want to show a fraction on the calculator, e.g. 5 7 size 12{ { { size 8{5} } over { size 8{7} } } } {} you must key in 5 ÷ 7 = .

1.1 How does the calculator show the following fractions? Write down what you key in.

a) 3 5 size 12{ { { size 8{3} } over { size 8{5} } } } {} ______________

b) 6 7 size 12{ { { size 8{6} } over { size 8{7} } } } {} ______________

c) 5 8 size 12{ { { size 8{5} } over { size 8{8} } } } {} ______________

d) 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} ______________

e) 3 4 size 12{ { { size 8{3} } over { size 8{4} } } } {}

BRAIN–TEASER!

There are seven cows in a camp. Isolate them by means of three fences so that each cow is in its own small camp.

Indicate with a coloured pencil crayon where you would put the fences.

Assessment

Learning outcomes(LOs)
LO 1
Numbers, Operations and RelationshipsThe learner is able to recognise, describe and represent numbers and their relationships, and counts, estimates, calculates and checks with competence and confidence in solving problems.
Assessment standards(ASs)
We know this when the learner:
1.1 counts forwards and backwards fractions;
1.2 describes and illustrates various ways of writing numbers in different cultures (including local) throughout history;
1.3 recognises and represents the following numbers in order to describe and compare them:
  • common fractions to at least twelfths;
1.5 recognises and uses equivalent forms of the numbers listed above, including:
1.5.1 common fractions with denominators that are multiples of each other;
1.6 solves problems in context including contexts that may be used to build awareness of other Learning Areas, as well as human rights, social, economic and environmental issues such as:
  • financial (including buying and selling, profit and loss, and simple budgets);
LO 5
Data handlingThe learner will be able to collect, summarise, display and critically analyse data in order to draw conclusions and make predictions, and to interpret and determine chance variation.
We know this when the learner:
5.3 organises and records data using tallies and tables;

Memorandum

ACTIVITY 1

1. 1.1 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {} 1.2 3 12 size 12{ { { size 8{3} } over { size 8{"12"} } } } {} = 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {}

1.3 3 12 size 12{ { { size 8{3} } over { size 8{"12"} } } } {} = 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {} 1.4 6 10 size 12{ { { size 8{6} } over { size 8{"10"} } } } {} = 3 5 size 12{ { { size 8{3} } over { size 8{5} } } } {}

1.5 1 5 10 size 12{1 { { size 8{5} } over { size 8{"10"} } } } {} = 1 1 2 size 12{1 { { size 8{1} } over { size 8{2} } } } {} 1.6 1 3 8 size 12{1 { { size 8{3} } over { size 8{8} } } } {}

ACTIVITY 2

1. It is the same

2. 10 ; 5

7.1: 21

7.2; 20

  • :300

7.4 :168

ACTIVITY 3

  1. 1.1: 200 ml

1.2: 1 500 m

1.3: 300 g

1.4; 5 6 size 12{ { { size 8{5} } over { size 8{6} } } } {}

1.5: 2 500 mm or 2,5 m or 2 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {} m

BRAIN-TEASER!

a) 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {}

  1. 4
  2. 2 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {}
  3. 4 1 6 size 12{ { { size 8{1} } over { size 8{6} } } } {}
  4. 16

1.4 a) R1,25 / 125c

  1. 1 5 8 size 12{ { { size 8{5} } over { size 8{8} } } } {}

ACTIVITY 7

1.1 a) 3 size 12{ div } {} 5 = 0,6

  1. 6 size 12{ div } {} 7 = 0,8571428
  2. 5 size 12{ div } {} 8 = 0,625
  3. 1 size 12{ div } {} 12 = 0,0833333
  4. 3 size 12{ div } {} 4 = 0,75

Questions & Answers

Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
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
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
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali 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, Mathematics grade 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10994/1.3
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