<< Chapter < Page Chapter >> Page >

Natuurwetenskappe

Materie, meting en reaksies

Materie en meting

Opvoeder afdeling

Memorandum

1. My metode:

Oppervlakte = l × b

= 6 cm × 10 cm

= 60 cm 2

2. A = ℓ × b

Area (oppervlakte) = lengte vermenigvuldig met breedte

Jy gebruik hierdie formule om die oppervlakte van ‘n reghoek te bepaal.

3. 25 cm 2

Leerder afdeling

Inhoud

Aktiwiteit: om oppervlakte te kan bepaal deur meting en berekening [lu 1.2]

Het jy al iemand hoor sê: "Die huis se grootte is 150 vierkante meter (150 m²)"? Is julle seker dat julle die term vierkante meter verstaan?

Kyk na die skets:

Elke blokkie stel een vierkante meter voor. 'n Vierkante meter is 'n vierkantige oppervlakte waarvan elke sy een meter lank is.

As ons dus sê die oppervlakte van fig. X is 100 m², bedoel ons dat ons een- honderd oppervlaktes van 1 m² daarin kan plaas. 'n Mens sou elke blokkie kon tel om die grootte van die oppervlakte te bepaal, maar daar is 'n korter metode.

Indien die lengte van die een sy (10 m) vermenigvuldig word met die lengte van die ander sy (10 m), word die aantal vierkante meterblokkies wat in die totale oppervlakte kan inpas (100), verkry (10 m × 10 m = 100 m²).

1m 2 1m 2 1m 2 1m 2 1m 2 1m 2 1m 2 1m 2 1m 2 1m 2
1m 2
1m 2
1m 2
1m 2
1m 2
1m 2
1m 2
1m 2
1m 2

Fig. X

1. Hoe sal jy die oppervlakte van die volgende reghoek bepaal?(Elke blokkie is 1 cm²)Die lengte van hierdie reghoek is 100 mm en die breedte is 60 mm.

My metode:

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(5)

2. Wat beteken die volgende formule: A = ℓ size 12{ times } {} b?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

3. Pas die volgende formule toe om die oppervlakte van die gegewe driehoek te bepaal:

b staan vir die lengte van die basis

h staan vir die hoogte van die loodregte lyn

  • My antwoord (geskat):______________________________________________
  • My antwoord (bereken volgens die gegewe formule)::____________________

(2)

Assessering

Leeruitkomste 1: Die leerder is in staat om met selfvertroue op weetgierigheid oor natuurlike verskynsels te reageer, en om binne die konteks van wetenskap, tegnologie en die omgewing verbande te ondersoek en probleme op te los.

Assesseringstandaard 1.2: Dit is duidelik wanneer die leerder ondersoeke uitvoer en data versamel: organiseer en gebruik apparaat/toerusting of bronne om inligting in te win en te noteer.

Questions & Answers

what is math number
Tric Reply
x-2y+3z=-3 2x-y+z=7 -x+3y-z=6
Sidiki Reply
Need help solving this problem (2/7)^-2
Simone Reply
x+2y-z=7
Sidiki
what is the coefficient of -4×
Mehri Reply
-1
Shedrak
the operation * is x * y =x + y/ 1+(x × y) show if the operation is commutative if x × y is not equal to -1
Alfred Reply
An investment account was opened with an initial deposit of $9,600 and earns 7.4% interest, compounded continuously. How much will the account be worth after 15 years?
Kala Reply
lim x to infinity e^1-e^-1/log(1+x)
given eccentricity and a point find the equiation
Moses Reply
12, 17, 22.... 25th term
Alexandra Reply
12, 17, 22.... 25th term
Akash
College algebra is really hard?
Shirleen Reply
Absolutely, for me. My problems with math started in First grade...involving a nun Sister Anastasia, bad vision, talking & getting expelled from Catholic school. When it comes to math I just can't focus and all I can hear is our family silverware banging and clanging on the pink Formica table.
Carole
I'm 13 and I understand it great
AJ
I am 1 year old but I can do it! 1+1=2 proof very hard for me though.
Atone
hi
Adu
Not really they are just easy concepts which can be understood if you have great basics. I am 14 I understood them easily.
Vedant
hi vedant can u help me with some assignments
Solomon
find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
I know this work
salma
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
Abhi
If f(x) = x-2 then, f(3) when 5f(x+1) 5((3-2)+1) 5(1+1) 5(2) 10
Augustine
how do they get the third part x = (32)5/4
kinnecy Reply
make 5/4 into a mixed number, make that a decimal, and then multiply 32 by the decimal 5/4 turns out to be
AJ
how
Sheref
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
hmm
Abhi
is it a question of log
Abhi
🤔.
Abhi
I rally confuse this number And equations too I need exactly help
salma
But this is not salma it's Faiza live in lousvile Ky I garbage this so I am going collage with JCTC that the of the collage thank you my friends
salma
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
hii
Uday
hi
salma
hi
Ayuba
Hello
opoku
hi
Ali
greetings from Iran
Ali
salut. from Algeria
Bach
hi
Nharnhar
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Natuurwetenskappe graad 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Natuurwetenskappe graad 7' conversation and receive update notifications?

Ask