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Mathematics

Bonny and tommy take a look at the seasons

Educator section

Memorandum

This module still consists mostly of activities for consolidation, reinforcement and assessment of the work taught in the previous grades focusing on the number 100.

  • Number concept to 200.
  • Operations: - Consolidates all work covered in Grade 1 en 2.

The names of the months and the correct spelling thereof need to be attended to. Discussions about the seasons and a healthy environment (nature conservation) will provide opportunities for the integration with other learning areas.

Weather charts for the different seasons can be recorded e.g. February – summer; May – autumn; August – winter; November – spring. These are not the best months for the seasons but they are the months in which the learners attend school for the whole month. Complete a bar graph for every weather chart so that weather conditions can be compared and discussed. Having completed all the bar graphs these can be compared to one another and the learners can discover weather conditions relevant to their own regions as well as those relevant to each season. The educator can keep the graphs to compare the statistics with the next year’s graphs.

The tasks and activities in Learning Unit 2 are still mainly intended for consolidation of work covered in previous grades. It is essential, however, that educators continue to make use of concrete apparatus to repeat, explain and consolidate all concepts that were not fully mastered before.

It is of the utmost importance that learners must be totally familiar with the tens grouping of our numbers system:

10 ones are grouped as 1 group of ten

10 tens are grouped as 1 group of a hundred

10 groups of a hundred are grouped as 1 group of a thousand , etc.

Learners must work with counters that have been grouped in hundreds, tens and units . Should counters not be available, the following semi-concrete apparatus can be used.

Learners must work with counters that have been grouped in hundreds, tens and units . Should counters not be available, the following semi-concrete apparatus can be used.

The expansion cards (flared cards) are very useful in explaining place values, renaming, unifying of numbers and the 0 as place-keeper.

Attached you will find an example of expansion cards (flared cards) and a key to writing all number names. Flared cards enable learners to build any number, and if learners know the basic number names, they can construct and write any number name from the given parts. Give each learner a copy to use, for example

Example:

Number name: one thousand one hundred and thirty seven

If you wish to use this example, enlarge it and copy it on manilla.

0 nought 1 one 2 two 3 three 4 four 5 five 6 six 7 seven 8 eight 9 nine 10 ten 1 1 eleven 12 twelve 13 thirteen 14 fourteen 15 fifteen 16 sixteen 17 seventeen 18 eighteen 19 nineteen
20 twenty21 twenty one22 twenty two23 twenty three24 twenty four25 twenty five26 twenty six27 twenty seven28 twenty eight29 twenty nine
10 ten20 twenty30 thirty40 forty50 fifty60 sixty70 seventy80 eighty90 ninety
100 one hundred 200 two hundred 300 three hundred 400 four hundred 500 five hundred 600 six hundred 700 seven hundred 800 eight hundred 900 nine hundred 101 one hundred and one102 one hundred and two103 one hundred and three104 one hundred and four105 one hundred and five106 one hundred and six107 one hundred and seven108 one hundred and eight109 one hundred and nine 1 000 one thousand 3 000 three thousand 5 000 five thousand 7 000 seven thousand 9 000 nine thousand 2 000 two thousand4 000 four thousand6 000 six thousand8 000 eight thousand10 000 ten thousand 111 one hundred and eleven112 one hundred and twelve113 one hundred and thirteen114 one hundred and fourteen115 one hundred and fifteen116 one hundred and sixteen117 one hundred and seventeen118 one hundred and eighteen119 one hundred and nineteen120 one hundred and twenty121 one hundred and twenty one122 one hundred and twenty two123 one hundred and twenty three124 one hundred and twenty four125 one hundred and twenty five126 one hundred and twenty six127 one hundred and twenty seven128 one hundred and twenty eight129 one hundred and twenty nine 110 one hundred and ten120 one hundred and twenty130 one hundred and thirty140 one hundred and forty150 one hundred and fifty160 one hundred and sixty170 one hundred and seventy180 one hundred and eighty190 one hundred and ninety

Questions & Answers

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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Source:  OpenStax, Mathematics grade 3. OpenStax CNX. Oct 14, 2009 Download for free at http://cnx.org/content/col11128/1.1
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