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Pokus – 7.A
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1) Vypočítame dva príklady – slovné
úlohy na objem: čo je lacnejšie –
sprchovanie alebo kúpanie?
2)Zopakujeme si pomocou hlasovania
– objem kocky, kvádra.
3) Pokus – aký objem má kameň.
4) Opakujeme na PC – objem kocky a
kvádra.
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Pomôcky: rôzne kamene –každý žiak má svoj kameň
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Začíname:
Nalejeme 300 ml
vody do kocky.
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Odmeriame
a zapíšeme
výšku vody
v kocke.
Potom
vypočítame
objem vody
v kocke.
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Dáme kameň
do kocky s
vodou.
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Zas odmeriame
výšku vody.
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Ideme si
odmerať
veľkosť kocky
– strany.
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Počítame
objem vody
bez kameňa a
s kameňom.
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Aký má objem kameň?
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Keby sme kameň rozpustili tak by mal objem potiaľto.
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DÚ: prepíš si postup pokusu a
nakresli si to aj v obrázkoch
(na PC alebo pekne ručne na
papier).
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