# 3.22 Om probleme in konteks op te los

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## Memorandum

1.

1.1 3 cm × 2 cm × 2 cm = 12 cm³

3 cm × 2 cm × 3 cm = 18 cm³

1 cm × 4 cm × 3 cm = 12 cm³

1.2 5 m × 3,5 m × 2 m = 35 m²

1.3 9 cm × 6 cm × 2 cm = 108 cm²

2. 2.1 577 912 cm²

2.1 583 296 cm²

3. (78 cm × 46 cm × 52 cm) ÷ (24 cm × 8 cm × 11 cm)

= 186 576 cm² ÷ 2 112 cm²

= 88,34

= 88 klein boksies

## Aktiwiteit: om probleme in konteks op te los [lu 1.6.2]

1. Bereken die volume van die volgende:

1.1

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1.2 ’n Swembad van 5 m lank, 3,5 m breed en 2 m diep

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1.3 ’n Blikkie tuna: 9 cm by 6 cm by 2 cm

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2. Watter houer het die grootste volume:

2.1: 106 cm by 94 cm by 58 cm, or

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2.2: 93 cm by 98 cm by 64 cm?.

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3. Hoeveel klein kartondosies met afmetings 24 cm × 8 cm × 11 cm kan jy pak binne ’n groot kartondoos van 78 cm by 46 cm by 52 cm?

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## 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 1.6: Dit is duidelik wanneer die leerder probleme oplos in konteks, insluitend kontekste wat gebruik kan word om ‘n bewustheid van ander leerareas, asook van menseregte-, sosiale, ekonomiese en omgewingskwessies, te bevorder soos:

1.6.2: meting in konteks van Natuurwetenskappe en Tegnologie.

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