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Vorlesungsmitschrift 05-GSD-MATH01.SE Arithmetik und ihre Didaktik
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20.01.202110 HalbschriftlichesRechnen II
Voraussetzungen Halbschriftliche Multiplikation
gesicherte Grundvorstellung zur Rechenoperation Multiplikation
sichereKenntnis AufgabenkleinenEinmaleins
Beherrschen Rechenstrategien
sicheres Stellenwertverständnis
Beherrschen halbschriftlichenAddition und Kopfrechnen
RechenStrategien Multiplikation
DekadischeAnalogien
20 30 600
schrittweise
6 12 72
6 10 60
6 2 12
TypischeFehler Multiplikation
VerständnisFehler
nichtvollständigeErmittlung TeilProdukte
weiseszerlegen derFaktoren
ziffern
Rechenfehler
Voraussetzungen halbschriftlicheDivision
selben wie Multiplikation
Rechenstrategien
DekadischeAnalogien
140 20 7
TypischeFehler
Verständnis
Fehler
ungünstige ZerlegungDividenden
fehlerhafteVerknüpfungTeilergebnisse
Rechenfehler
fehlerhaftes streichen von Nullen
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