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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

what is simple harmonic motion
Faith Reply
examples: vibrating prongs of a tuning fork and a guittar string.
Salman
It is a repetitive periodic motion of a system about an equilibrium position
Felix
SHM is the repitition process of to and fro motion.
Younus
SHM is the motion in which the restoring force is directly proportional to the displacement of body from its mean position and is opposite in direction to the displacement. From Hooke's law F=-kx
Kushal
SHM is the motion in which the restoring force is directly proportional to the displacement of body from its mean position and is opposite in direction to the displacement. From Hooke's law F=-kx
Kushal
what is a wave?
DAVID Reply
show that coefficient of friction of solid block inclined at an angle is equivalent to trignometric tangent of angle
DAVID
Wave is the transfer of energy due to the periodic vibration of the particles in the medium.
Kushal
wave is the transfer of energy
Vindora
Wave is the transfer of particles in a fluid or any way.
Younus
thanks for that definition.
Dodou Reply
Hi everyone please can dere be motion without force?
Lafon
no...
Enyia
Thanks
Lafon
hi
Omomaro
whats is schrodinger equation
Omomaro
l went spiral spring
Xalat
what is position?
Adhar Reply
position is simply where you are or where you were
Shii
position is the location of an object with respect to a two or three dimensional axes or space.
Bamidele
Can dere be motion without force?
Lafon
what is the law of homogeinity?
auson Reply
two electric lines of force never interested each other. why?
Sujit Reply
proof that for BBC lattice structure 4r\root 5 and find Apf for the BBC structure
Eric Reply
what is physics?
Abdulaziz Reply
physics is deine as the specific measrument of of volume, area,nd distances...
Olakojo
if a string of 2m is suspended an an extended 3m elasticity is been applied.... is hooks law obeyed?
Enyia
if a string of 2m is suspended an an extended 3m elasticity is been applied.... is hooks law obeyed?
Enyia
yes
Alex
proof that for a BBC lattice structure a= 4r/ root 5 find the APF for the BBC structure
Eric
if a string of 2m is suspended an an extended 3m elasticity is been applied.... is hooks law obeyed?
Enyia Reply
tell me conceptual quetions of mechanics
Syeda Reply
I want to solve a physical question
ahmed
ok
PUBG
a displacement vector has a magnitude of 1.62km and point due north . another displacement vector B has a magnitude of 2.48 km and points due east.determine the magnitude and direction of (a) a+ b and (b) a_ b
Kou Reply
quantum
George
a+b=2.9
SUNJO
a+b
Yekeen
use Pythogorous
Dhritwan
A student opens a 12kgs door by applying a constant force of 40N at a perpendicular distance of 0.9m from the hinges. if the door is 2.0m high and 1.0m wide determine the magnitude of the angular acceleration of the door. ( assume that the door rotates freely on its hinges.) please assist me to d
Mike
what is conditions met to produce shm
Enocy Reply
what is shm
Manzoor
shm?
Grant
Why is Maxwell saying that light is an electromagnetic wave?
Bong
1st condition; It(th e BBC's system) must have some inertia which will enable it to possess Kinetic energy 2. must be able to store potential energy
Calleb
I meant "the system" not the BBC'S....."
Calleb
what a answer bro
Manzoor
kindly tell us the name of your university
Manzoor
GUlam Ishaq Khan INSTITUTE of engineering science
ali
Department of Environment Ionian University Zante Greece
why light wave travel faster than sounds
ALI Reply
Why light travel faster than sounds?
ALI
Light travel faster than sound because it does not need any medium to travel through.
alhassan
when an aeroplane flies....why it does not fall on the earth?
Frazali
As an aeroplane moves, it hits a wind,we have the wind flowing at the upper and lower zone of the aeroplane, the one that is moving on the upper zone moves at a greater speed than that of the lower zone, this creates a low pressure on the upper zone and a greater pressure at the lower zone.
Kipkoech
which thing of aeroplane moves it upward?
Frazali
good question
Manzoor
about force
Barataa
am pleased to join the group
Nesru
yea
caleb
It a privilege to be here
olajire
hi
Awode
hello
Manzoor
Light speed is more than sound speed. C=3×10*8m/s V=320-340 m/s
siva
A body of mass 2kg slides down a rough plane inclined to horizontal at 30degrees. find the energy that is wasted as a result of friction if the co-efficient of kinetic f
official Reply
ten applications of Newton's second law of motion
Alale Reply
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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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