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  • GETIntPhaseMaths display tagshide tags

    This module is included inLens: Siyavula: Mathematics (Gr. 4-6)
    By: Siyavula

    Review Status: In Review

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Om te meet en omtrek te bereken

Module by: Siyavula Uploaders. E-mail the author

WISKUNDE

Meting en Tyd

Lengte

OPVOEDERS AFDELING

Memorandum

LEERDERS AFDELING

Inhoud

In hierdie module gaan ons met behulp van verskeie instrumente meet.

Ons gaan ..................

  • lengte,
  • massa,
  • omtrek,
  • oppervlak,
  • volume,
  • inhoud,
  • temperatuur en
  • tyd meet.

AKTIWITEIT: Om te meet en omtrek te bereken [LU 4.4.3, LU 4.8.1]

1. ’n Mier moet vanaf A na B, dan na C, D, E en weer tot by A loop (reg rondom – omtrek).

Figure 1
Figure 1 (graphics1.png)

1.1 Watter instrument sal jy gebruik om te bereken hoe ver die mier loop?

1.2 Bereken nou die afstand wat die mier loop.

_____________________________________________________________________

_____________________________________________________________________

1.3 In watter eenheid het jy gemeet? ____________________________________

1.4 Watter eenheid het jou maat gebruik? ________________________________

2. Kyk goed na die volgende figure. Kan jy vir jou opvoeder sê wat die “gewone” naam vir elkeen (behalwe vir die vierkant) is?

Figure 2
Figure 2 (graphics2.png)

square

vierkant

2.1 Hierdie vorms is reëlmatig. Waarom?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

2.2 Bereken nou die omtrek van elke vorm (onthou jou eenhede!). Skryf die naam van elke vorm neer, en daarnaas die antwoord.

(a) __________________________________________________________________

(b) _________________________________________________________________

(c) __________________________________________________________________

(d) _________________________________________________________________

2.3 Indien ’n vierkant se omtrek met die volgende formule4 × sy bereken kan word, wat sal die formule wees vir die omtrek van elk van die vorms? Skryf weer eers die naam en dan die antwoord.

(b) _________________________________________________________________

(c) __________________________________________________________________

(d) _________________________________________________________________

2.4 Wat noem ons die volgende vorm?

Figure 3
Figure 3 (graphics3.png)

_____________________________________________________________________

2.5 Kan jy dalk ’n formule aflei vir die omtrek van ’n reghoek?

_____________________________________________________________________

ONTHOU!

’n Vierkant is ook ’n reghoek! Dit is net een waarvan die vier sye ewe lank is.

Figure 4
Figure 4 (graphics4.png)
Alle vierkante is reghoeke, maar alle reghoeke is nie vierkante nie.

3. Hier is nou ’n paar onreëlmatige vorms.

Figure 5
Figure 5 (graphics5.png)

3.1 Hoekom sê ons hierdie vorms is onreëlmatig?

_____________________________________________________________________

3.2 Bereken nou die omtrek van elkeen van die onreëlmatige vorms.

A: __________________________________________________________________

B: __________________________________________________________________

C: __________________________________________________________________

Assessering

Leeruitkomste 4:Die leerder is in staat om gepaste meeteenhede, instrumente en formules in ‘n verskeidenheid kontekste te gebruik.

Assesseringstandaard 4.4: Dit is duidelik wanneer die leerder twee-dimensionele en drie-dimensionele voorwerpe skat, meet, aantekeninge maak van, vergelyk en orden deur S.I.-eenhede met die geskikte noukeurigheid te gebruik vir: (cm), metres (m) and kilometres (km);

Assesseringstandaard 4.8: Dit is duidelik wanneer die leerder by benadering ondersoek en bepaal (alleen en/of as ‘n lid van ‘n groep of span):

4.8.1: omtrek m.b.v. liniale of maatbande.

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Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

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