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| Natuurlike water | Probleme | Ernstige probleme | Op die herstelpad | Helder water |
| Baie leweBaie suurstofGeen reukSkoon water | Swamme verskynMin suurstofGeringe reukGrys of donker water | Organismes wat sonder suurstof kan leweGeen suurstofReuk van “vrot eiers”Swart water | Geringe tekens van leweMin suurstofGeringe reukWater word helderder | Baie leweBaie suurstofGeen reukHelder water |
OPDRAG 10
Gaan op ‘n staptog langs ‘n rivier. Wat neem jy waar? Versamel monsters van skulpe, vere, plante, ens. langs die roete, sonder om enige skade te berokken. Stel vas of daar dele van die rivier is wat erger as ander dele besoedel is en of daar dele is wat reeds herstel het na blootstelling aan besoedeling.
Indien julle ‘n gebied identifiseer waar die besoedelingsvlakke baie hoog is, kan julle later terugkeer en ‘n opruimingsoperasie aanpak.
OPDRAG 11
Luister na die liedjie “Acid Rain” van Wendy Oldfield. Daar bestaan nog liedjies met omgewingsboodskappe. Lys hulle en bespreek die kwessies wat daarin aangespreek word in die klas.
OPDRAG 12
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Leeruitkomste 1: Die leerder is in staat om met selfvertroue op weetgierigheid oor natuurlike verskynsels te regeer, en om binne die konteks van wetenskap, tegnologie en die omgewing verbande te ondersoek en probleme op te los.
Assesseringstandaard 1.1: Dis duidelik wanneer die leerder ondersoeke beplan;
Assesseringstandaard 1.2: Dis duidelik wanneer die leerder ondersoeke uitvoer en data versamel.
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