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Leg de leerlingen uit dat ze gemakkelijk kunnen demonstreren dat een schroef een hellend vlak is.
Geef de leerlingen een A4 blaadje. Laat ze dat diagonaal vouwen en doorknippen. Ze hebben nu een drie-
hoek met een rechte hoek gemaakt.
Trek dan een dikke lijn langs de schuine kant. Vraag ze wat de schuine kant voorstelt. Ze moeten snappen
dat dit het hellend vlak(helling) is. Wijs ze op het verschil in lengte van de helling en de andere zijkanten.
Wikkel de papieren driehoek om een potlood. (Doe dit eerst voor.)
Laat de leerlingen naar de gekleurde lijn kijken. Ze moeten zien dat de spiraalvorm op een schroef lijkt.
Laat op internet naar verdere informatie over schroeven zoeken.
Threads
Body
schroefdraad
lichaam
HANDLEIDING LEERKRACHT
ENKELVOUDIGE MACHINES
Education
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