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Natuurwetenskappe

Lewe en lewenswyse

Opvoeders afdeling

Memorandum

1. Aantal plantsoorte: vier

  • Vier soorte: Bome: groei hoog (lang stam), vertak, baie blare, staan op hul eie.
  • Struike: soos bome maar nie hoog nie (nie ‘n lang stam nie)
  • Rankers: groei hoog maar staan nie op hul eie nie – rank teen ander plante of enige struktuur op.
  • Grondbedekkers, kruide: groei laag

2. In bome/struike: Insekte, voëls, slange, eekhorinkies

  • Op grond: Muise, insekte, hase, voëls, slange, paddas
  • In dooie laag op grond: Erdwurms en ander wurms, besies, paddas
  • In grond: Erdwurms, molle, slange
  • In water: Visse, insekte, paddas

3. Elke plant en dier is op ‘n bepaalde wyse aangepas om in sy omgewing te kan oorleef.

Leerder afdeling

Inhoud

Aktiwiteit: om inligting wat uit ‘n studie van ‘n ekosisteem verkry is te interpreteer [lu 2.3]

VERSKEIDENHEID BINNE ‘N EKOSISTEEM

‘n Ekosisteem word gekenmerk deur ‘n groot verskeidenheid lewende organismes.

Kyk na die bygaande illustrasie van ‘n ekosisteem en beantwoord die vrae wat daarop volg. As jy toegang het tot ‘n plek waar plante groei, veral as daar ook water is soos ‘n stroompie of dam, kan jy gerus ‘n bietjie tyd daar spandeer en probeer om verdere inligting vir jou antwoorde daar te vind. Jy het dan ‘n ekosisteem waarin jy waarnemings kan maak.

  1. Hoeveel verskillende soorte plante kan jy onderskei? ________________
  • Probeer om vier soorte te onderskei en beskryf elkeen:

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2. Probeer vasstel watter diere jy moontlik op die volgende plekke in die ekosisteem sou kon vind (raadpleeg boeke of ondersoek die ekosisteem wat jy gekies het):

  • In die bome en struike bokant die grond:

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  • Bo-op die grond:

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  • In die laag dooie plantmateriaal bo-op die grond:

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  • In die grond:

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  • In die water:

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  • Hoekom is daar so ‘n verskeidenheid plante en diere?

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Assessering

Leeruitkomstes 2: Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

Assesseringstandaarde 2.3: Dit is duidelik wanneer die leerder inligting interpreteer: interpreteer inligting deur kernidees in die teks te identifiseer, patrone in aangetekende data te vind en gevolgtrekkings te maak uit inligting in verskeie vorme (bv. prente, diagramme en geskrewe teks).

Questions & Answers

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Source:  OpenStax, Natuurwetenskappe graad 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
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