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Mathematics

Mathematics in the world around us

Educator section

Memorandum

Critical and developmental outcomes:

The learners must be able to:

1. identify and solve problems and make decisions using critical and creative thinking;

2. work effectively with others as members of a team, group, organisation and community;

3. organise and manage themselves and their activities responsibly and effectively;

4. collect, analyse, organise and critically evaluate information;

5. communicate effectively using visual, symbolic and/or language skills in various modes;

6. use science and technology effectively and critically, showing responsibility towards the environment and the health of others;

6. demonstrate an understanding of the world as a set of related systems by recognising that problem-solving contexts do not exist in isolation;

7. reflect on and explore a variety of strategies to learn more effectively;

8. participate as responsible citizens in the life of local, national, and global communities;

9. be culturally and aesthetically sensitive across a range of social contexts;

10. explore education and career opportunities; and

develop entrepreneurial opportunities.

  • Integration of Themes:
  • Social justice: The story of the secret signs shows how history can be important. What are the advantages of knowing things about the past?

Learners can divide into groups, visit the library and do more research on the origin of our number system, the Roman numerals, etc.

Learners can do projects on Mathematics found in nature, in the classroom and in the home. They learn to work together in a team, listen to one another and to share ideas.

Discuss whether so called “bargains” are always bargains. What is your attitude towards “sales” in shops? Is it always necessary to give / receive birthday presents? Why do you give presents? When would not giving presents be acceptable?

  • With the inclusion of the story of the secret sign at this stage, learners are able to understand the significance of the “0” as “place holder” (indegrated with Literacy).
  • The patterns with addition and subtraction of 6, 7, 8 and 9 are emphasised.
  • Telling the time in minutes become easy as learners count the minutes in 5’s.
  • Codes are used to find the answer to a puzzle.
  • As preparation for the Christmas celebrations, the month of December is used for activities involving the calendar.
  • Module 8 concludes with a game where crackers with number sentences are matched to lights on the Christmas tree.

Leaner section

Content

Activity: directions [lo 1.6, lo 1.9, lo 1.11, lo 3.8]

  • Travel along the lines and complete the routes:

1. From M to C:

M, L, _____________________________________________________________C.

or

M, N, _____________________________________________________________C.

2. From M to A:

M, ________________________________________________________________A.

or

M, ________________________________________________________________A.

or

M, ________________________________________________________________A.

LO 3.8
  • This is where my friends and I live.

  • Ek woon by 10.
  • Ron woon by 5.
  • Sisulu woon by 27.
  • Piet woon by 22.

Om by my maats te gaan kuier moet ek rigtings ken. Ek gebruik hierdie tekens.

  • As ek by Ron wil gaan kuier, moet ek op stap van 10 tot 5.
  • Skryf die rigtings (tekens) van my huis by 10 na:
  • Sisulu se huis:
  • Piet se huis:
  • Bespreek of daar ander roetes ook is om by hulle te kom.
LO 3.8
  • Travel long the lines and complete the routes.

  • My friends have to travel to 18 where the school is.
  • Pat travels from 28 to 18.

This is her route: 28...... ...... ...... ......

If each number is 2 km from the next number on the route, then Pat travels ____________________ km to school.

If she pays 20c for every 2 km she will pay __________________ to get to school. Sam’s route is from 7 to 18.

7, __________________________________________________________________

His route is ______________________________________ km.

He pays ______________________________________ to school.

He pays ______________________________________ to school and back home.

  • Does Sam pay more or less than Pat? _________________________________
  • Give a reason for your answer.
LO 1.6 LO 1.11 LO 3.8
  • Complete.

Pat goes to school on this bus.

1. This bus travels on route 2. (only 2’s are used in the number sentences).

Mo goes to school on this bus.

2. This bus travels on route 3. Write the number sentences on the stops. Use only 3’s.

Ann goes to school on this bus.

3. This bus travels on route 4. Write the number sentences, using only 4’s.

LO 1.9

Assessment

Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.

Assessment Standard 1.6: We know this when the learner solves money problems involving totals and change in rand and cents;

Assessment Standard 1.9: We know this when the learner performs mental calculations;

Assessment Standard 1.11: We know this when the learner explains own solutions to problems;

Learning Outcome 3: The learner will be able to describe and represent characteristics and relationships between two-dimensional shapes and three-dimensional objects in a variety of orientations and positions.

Assessment Standard 3.8: We know this when the learner understands directions.

Questions & Answers

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
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
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 2. OpenStax CNX. Oct 15, 2009 Download for free at http://cnx.org/content/col11131/1.1
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