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Wiskunde

Voorspellings, vergelykings en veranderlikes

Opvoeders afdeling

Memorandum

6. 12

7 (a) 18

(b) 13

(c) 17

(d) 19

(e) 12

Som: 45

2.1

8.

1 14 7 12
15 4 9 6
10 5 16 3
8 11 2 13

Som: 34

9. (a) 48

(b) 10

(c) 64

(d) 90

(e) 108

10. (a) waar

(b) waar

(c) vals

(d) vals

(e) waar

11.

_____ _____ _____
_____ _____ _____
_____ _____ _____

12.

9 969 _____ 9 699 _____
_____ _____ _____ 6 669
6 966 9 669 6 696 _____
6 699 _____ 6 969 9 666

13. Leerders se eie assessering

Leerders afdeling

Inhoud

Aktiwiteit: voorspellings, vergelykings en veranderlikes (towervierkant) [lu 1.7.2, lu 1.9.1, lu 1.10, lu 2.5]

6. Onthou jy nog?

In ’n towervierkant is die som van die getalle horisontaal, vertikaal en diagonaal (skuins) dieselfde.

Wat is die som van hierdie towervierkant? _____________________________

1 8 3
6 4 2
5 0 7

7. Soms vervang ons getalle met letters van die alfabet.

Kyk na die volgende towervierkant. Vervang nou die letters met die korrekte getalle.

a 11 16
b 15 c
14 d e
a: _____________________________b: _____________________________c: _____________________________d: _____________________________e: _____________________________

Wat is die som van die towervierkant? _____________________________

8. Kopkrapper!

In die volgende towervierkant is al die getalle vervang deur letters.

As k = 4 en c = 1 , skryf die korrekte getalle in.

Onthou: 3k beteken 3 × k en 2c beteken 2 × c

c 3k + 2c k + 3c 2k + 4c
3k + 3c 4c 2k + c k + 2c
2k + 2c k + c 3k + 4c 3c
k + 4c 2k + 3c 2c 3k + c

Wat is die som van die towervierkant? _____________________________________

9. Ons kan ook aan party letters sekere waardes gee, bv.

a = 9 ; b = 6 ; c = 8 ; d = 2 ; e = 10 en f = 20

Bereken:

a) b x c = ________________________________

b) f ÷ d = ________________________________

c) a x b + e = ____________________________

d) (f – e) x a = ____________________________

e) [(c – d) + b] x a = _______________________

10. Vervang die letters met enige getal van jou keuse en kyk of die volgende stellings waar of onwaar is:

a) e + f = f + e _______________________

b) 2k + 2c = 2 x (k + c) _______________________

c) h – g = g – h _______________________

d) 4b = 4 + b _______________________

e) x + (y + z) = (x + y) + z _______________________

11. Kopkrapper!

Bou jou eie “towervierkant” . Verminder die sewe vierkante na vyf deur net vier tandestokkies te skuif. Teken jou poging langs die gegewe een en dui aan watter stokkies waarheen geskuif is.

12. Nog ‘n kopkrapper!

Kan jy die volgende towervierkant voltooi deur slegs ’n 6 en /of ’n 9 in jou getalle te gebruik? (Onthou: die som van al die getalle in elke ry, kolom en diagonaal moet dieselfde wees!)

6 666 6 996
9 696 6 999 9 966
9 999
9 996

13. Tyd vir selfassessering

Maak ’n regmerkie in die toepaslike blokkie:

Onseker Redelik seker Baie seker
Ek kan die volgende verduidelik en ’n voorbeeld gee: ____ ____ ____
a) vierkantgetal ____ ____ ____
b) reghoekgetal ____ ____ ____
c) kubusgetal ____ ____ ____
Ek ken ’n sinoniem vir: ____ ____ ____
a) vierkantgetal ____ ____ ____
b) kubusgetal ____ ____ ____
Ek kan letters deur getalle vervang en so ’n towervierkant oplos ____ ____ ____
Ek kan die 4 hoofbewerkings korrek doen nadat ek die letters met syferwaardes vervang het ____ ____ ____

Assessering

Leeruitkomste 1: Die leerder is in staat om getalle en die verwantskappe daarvan te herken, te beskryf en voor te stel, en om tydens probleemoplossing bevoeg en met selfvertroue te tel, te skat, te bereken en te kontroleer.

Assesseringstandaard 1.7: Dit is duidelik wanneer die leerder skat en bereken deur geskikte bewerkings vir probleme wat die volgende behels, te kies en te gebruik:

1.7.2: veelvoudige bewerkings met heelgetalle;

Assesseringstandaard 1.9: Dit is duidelik wanneer die leerder ‘n verskeidenheid tegnieke gebruik om berekeninge te doen, insluitend:

1.9.1: die gebruik van die kommutatiewe, assosiatiewe en distributiewe eienskappe met positiewe rasionale getalle en nul;

Assesseringstandaard 1.10: Dit is duidelik wanneer die leerder ‘n verskeidenheid strategieë gebruik om oplossings te kontroleer en die redelikheid daarvan te beoordeel;

Leeruitkomste 2: Die leerder is in staat om patrone en verwantskappe te herken, te beskryf en voor te stel en probleme op te los deur algebraïese taal en vaardighede te gebruik.

Assesseringstandaard 2.5: Dit is duidelik wanneer die leerder getalsinne oplos of voltooi deur inspeksie of deur ‘n proses van probeer en verbeter, en die oplossings deur vervanging kontroleer (bv. 2 x - 8 = 4).

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, Wiskunde graad 7. OpenStax CNX. Oct 21, 2009 Download for free at http://cnx.org/content/col11076/1.2
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