# 1.10 Grouping  (Page 2/4)

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Frontpage.

It is essential to have an initial discussion on the changing of the seasons. Some learners may find it very stimulating to discover what causes seasons and why there are different seasons in the year.

Learners must complete the pictures by adding their own drawings to illustrate the typical seasonal qualities, e.g.:

Spring: flowers and blossoms; 2. Summer: anything to do with the seaside or the swimming pool; 3. Autumn: leaves in autumn colours on trees and the ground; 4. Winter: snow on the mountains or rain (where applicable), and leafless trees. Discuss it with the learners.

Learners are now expected to know the names of the seasons in the correct order, and to write them down. A “year and seasons clock” can be put up in the classroom, which can help the learners to master writing the names.

Explain the origin of the extra day every 4 years to the learners. Some of the learners may understand it at this stage, but it cannot be expected of them at all.

This work sheet may elicit a discussion on the Olympic games.

It is important that the learners must understand that if 1 is added to the 9 units of 99, there is another group of ten. There are now 10 groups of ten altogether, which are grouped together to make 1 group of a hundred.

Likewise, they must understand that if they want to take away units from a hundred, they first have to dissolve the group of one hundred, and then dissolve 1 group of ten, before they will have units to take away.

The 0 as place-keeper might cause problems for some learners, Therefore it is essential that the learners must use counters that are grouped in hundreds, tens and units (or the copied blocks), as well as the flared cards, when this work is being done. If necessary, provide similar activities.

If the learners find it difficult to master place values, lay out the numbers with the flared cards.

On the next page there is an example of the multiples chart. It can be utilised very effectively, therefore it is suggested that each learner is given a copy.

This example has been done further than the one on the work sheet, but it can be used for the whole year. Besides, there are learners who are able and keen to count in 6,7,8 and 9.

Show the learners how to find the answers to the tables, x and + from the chart.

Example: 2 x 4 = 8 Go right from 2 and above from 4 downwards – meet at 8 (see arrows)

15 ÷ 3 = 5 Go left from 15 to 3 and up from 15 - 5 th multiple

Multiples: Count up to the 10 th multiple and back.

At this stage the learners must know that 100c = R1. The learners now have a good concept of 100 and will realise that 120c equal R1 plus 20c, thus they can now learn to write it correctly, namely 120c = R1,20. Master it up to 199c = R1,99.

Once they have mastered it, do the reverse: R1,20 = 120c up to R1,99 = 199c.

It is imperative that the learners understand the completion and solution of a ten completely. This is an investment for the future. The more concrete work that is done here, the better the learners’ understanding of these concepts. They must be able to relate what they are doing. If they cannot say how they arrived at an answer, it means that the concrete image has not been properly consolidated. Give them many and regular exercises of this kind.

where we get a research paper on Nano chemistry....?
what are the products of Nano chemistry?
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
I only see partial conversation and what's the question here!
what about nanotechnology for water purification
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
why we need to study biomolecules, molecular biology in nanotechnology?
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
why?
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
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