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Natuurwetenskappe

Graad 4

Lewe en lewenswyse

Module 2

Die sigsintuig

Aktiwiteit:

Om te leer oor die sigsintuig

[lu 2.1]

Slim mense sê die oë is die siel van die mens, want as ‘n mens in iemand se oë kyk, kan jy dikwels agterkom watter tipe mens dit is. Sig is een van ons belangrikste sintuie, want dit gee jou ‘n prentjie van dit wat om jou aangaan.

Jou oë het lig nodig om te kan sien. Lig weerkaats van alles wat jy sien en gaan deur die klein swart gaatjie in die middel van jou oog, wat ons die pupil noem. Lig kan van die son af kom, of selfs van ‘n elektriese gloeilamp. As dit effens donker is, word jou pupille groter om meer lig deur te laat, maar wanneer die lig skerp is, word jou pupille kleiner om jou oë te beskerm. Die boodskap van wat jy sien, gaan deur ‘n senuwee na jou brein.

Opdrag:

Voltooi die tekening van die oog deur die byskrifte op die lyntjies, netjies in drukskrif, te skryf.

Hou ‘n groepbespreking oor die volgende:

Hoekom dra sommige mense ‘n bril?

Hoe moet ons optree teenoor kinders in ons klas wat bril dra?

Hou een oog toe, bespreek nou die nut daarvan om twee oë te hê.

Probeer ‘n bal vang met een oog toe.

Baie mense is blind. Hou jou oë styf toe vir ‘n paar minute en kyk hoe jy voel. Hoe moet ons teenoor blinde mense optree?

Assessering

 

LU 2

KONSTRUKSIE VAN WETENSKAPKENNIS Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

 

Dit is duidelik wanneer die leerder:

2.1   betekenisvolle inligting onthou;

2.2       inligting kategoriseer.

 

Memorandum

Opdrag

Oogbyskrifte:

  1. ooglid
  2. oogbol
  3. pupi
  4. ooghare

Questions & Answers

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evolutionary history and relationship of an organism or group of organisms
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the study of living organisms and their interactions with one another and their environments
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They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
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Genetics is the study of heredity
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the study of living organisms and their interactions with one another and their environment.
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list any five characteristics of the blood cells
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is organisms that are similar into groups called tara
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A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
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Source:  OpenStax, Natuurwetenskappe graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11097/1.1
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