Mall:Area intro: Skillnad mellan sidversioner
Hakan (diskussion | bidrag) |
Hakan (diskussion | bidrag) |
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| Rad 7: | Rad 7: | ||
'''Bra att känna till.''' [http://sv.wikipedia.org/wiki/Parallellogram Parallellogrammen] har arean = basen * höjden. Höjden är den streckade linjen i figuren. Basen är längden på den undre sidan. | '''Bra att känna till.''' [http://sv.wikipedia.org/wiki/Parallellogram Parallellogrammen] har arean = basen * höjden. Höjden är den streckade linjen i figuren. Basen är längden på den undre sidan. | ||
=== Spelar det någon roll var höjden står? === | |||
En triangel med en bestämd längd på basen och höjden. Har den olika area om höjden ritas på olika ställen? Eller spelar det ingen roll? | |||
Dra i glidaren och '''testa'''! | |||
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Versionen från 11 november 2012 kl. 21.07
Lektion 9 - Area
Mål. Förstå (och räkna med) begreppen area och omkrets för en rektangel, triangel. Kunna rita figurer utifrån en given omkrets. Ex rita en rektangel med omkretsen 14cm.
Film. Gösses Area för triangeln.
Bra att känna till. Parallellogrammen har arean = basen * höjden. Höjden är den streckade linjen i figuren. Basen är längden på den undre sidan.
Spelar det någon roll var höjden står?
En triangel med en bestämd längd på basen och höjden. Har den olika area om höjden ritas på olika ställen? Eller spelar det ingen roll?
Dra i glidaren och testa!
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Laboration - Arean av ett löv
Färgpennor, tejp, limstift, vita papper, linjaler, saxar, måttband, OH-film, nedfallna löv.
Uppgift: Uppskatta arean av ditt löv. Välj själv hur du gör.
- Praktisk uppgift: Arean av ett löv.
Lektion 13 - Enhetsomvandlingar för ytor
Kunna utföra enhetsomvandling mellan ytmått (km2, m2, dm2, cm2, mm2, l och ml) Ex hur många dm2 går det på 0,3 m2 , hur många ml går det på 200 mm2
Lektion 19 - Area - omkrets - volym
- Gösses mattelabb. em film från Kunskapshubben