AT33210B - Arithmetic teaching aids. - Google Patents

Arithmetic teaching aids.

Info

Publication number
AT33210B
AT33210B AT33210DA AT33210B AT 33210 B AT33210 B AT 33210B AT 33210D A AT33210D A AT 33210DA AT 33210 B AT33210 B AT 33210B
Authority
AT
Austria
Prior art keywords
teaching aids
arithmetic teaching
row
digits
cube
Prior art date
Application number
Other languages
German (de)
Inventor
Bohumil Cizl
Original Assignee
Bohumil Cizl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bohumil Cizl filed Critical Bohumil Cizl
Application granted granted Critical
Publication of AT33210B publication Critical patent/AT33210B/en

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Description

  

   <Desc/Clms Page number 1> 
 
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 EMI2.1 
 das   Bilden der Summe 2- (- l =   3 mit der Vorrichtung   erläutert   werden, so ist wie folgt vorzugehen. Die oberste Stange 3 wird solange gedreht, bis die Würfelseite a mit der Ziffer 1 sichtbar wird. Sodann werden die ersten zwei Würfel, also zwei Einer nach links geschoben und kann man dann unterhalb des zweiten Würfels an der Ziffernreihe 9 die Zahl 2 ablesen. Schiebt man noch einen Würfel nach links, so liegt dieser Würfel oberhalb der Zahl 3 der Ziffernreihe 9 und ist auf diese Weise die Summenbildung 2 + 1 = 3 erläutert. 



   Will   man   dem Kinde begreiflich machen, dass 4 X 3 = 12 ist, so werden die beiden obersten
Würfelrihen derarf fixiert, dass die   mit,, 1" bezeichnete   Würfelseite a sichtbar wird. Sodann   'werden die   Würfel in Gruppen von drei Einheiten nach rechts geschoben. Unterhalb des letzten
Würfels steht in der Ziffernreihe 9 die Zahl 12. Dieselbe Zahl ist auch auf   der Würfelseite   c 
 EMI2.2 




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 EMI2.1
 the formation of the sum 2- (- l = 3 are explained with the device, proceed as follows. The top rod 3 is rotated until the cube side a with the number 1 is visible. Then the first two cubes, i.e. Two ones are pushed to the left and you can then read the number 2 below the second cube on the number row 9. If you slide one more cube to the left, this cube is above the number 3 of the number row 9 and is thus the total 2+ 1 = 3 explained.



   If you want to make the child understand that 4 X 3 = 12, then the top two are
The row of dice is fixed in such a way that the side of the cube labeled "1" becomes visible. Then the dice are pushed to the right in groups of three units. Below the last one
The number 12 is in the row 9 of the cube. The same number is also on the cube side c
 EMI2.2

Claims (1)

jeder Reihe fortlaufend mit den Ziffern 1-10, die dritte Würfelseite (c) der ersten Reihe mit den Ziffern 1-10, der zweiten Reihe mit den Ziffern 11-20 der dritten Reihe mit den Ziffern 21-30 usf. bezeichnet ist, während die vierte Würfelseite (d) die Einer, Zehner und Hunderten EMI2.3 each row is marked consecutively with the digits 1-10, the third cube side (c) of the first row with the digits 1-10, the second row with the digits 11-20, the third row with the digits 21-30 and so on the fourth side of the die (d) the ones, tens and hundreds EMI2.3
AT33210D 1907-07-16 1907-07-16 Arithmetic teaching aids. AT33210B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT33210T 1907-07-16

Publications (1)

Publication Number Publication Date
AT33210B true AT33210B (en) 1908-06-10

Family

ID=3548750

Family Applications (1)

Application Number Title Priority Date Filing Date
AT33210D AT33210B (en) 1907-07-16 1907-07-16 Arithmetic teaching aids.

Country Status (1)

Country Link
AT (1) AT33210B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581492A (en) * 1950-03-28 1952-01-08 Lowe Educational and amusement device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581492A (en) * 1950-03-28 1952-01-08 Lowe Educational and amusement device

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