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ME 1989b.01203
Graessle, W.
How to teach percentages and proportions - missing operators or rule of three. Operatorform oder Dreisatzschema bei Prozentrechnung und Zuordnungsaufgaben.
(German)
Math. Unterrichtsprax. (1989) v. 10(1) p. 23-30.
Classification:
F83
Keywords:
Percentages
;
Teaching Methods
;
Estimation Techniques
;
Operative Techniques
;
Rule of Three
;
Equations
;
Secondary Modern Schools
;
Lower Secondary
;
;
Prozentrechnung
;
Methode
;
Ueberschlagsrechnung
;
Operatives Prinzip
;
Dreisatz
;
Gleichung
;
Hauptschule
;
Sekundarstufe 1
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