AT22178B - Arithmetic teaching aids. - Google Patents

Arithmetic teaching aids.

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Publication number
AT22178B
AT22178B AT22178DA AT22178B AT 22178 B AT22178 B AT 22178B AT 22178D A AT22178D A AT 22178DA AT 22178 B AT22178 B AT 22178B
Authority
AT
Austria
Prior art keywords
teaching aids
arithmetic teaching
arithmetic
rods
desc
Prior art date
Application number
Other languages
German (de)
Inventor
Gustav Knappe
Original Assignee
Gustav Knappe
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 Gustav Knappe filed Critical Gustav Knappe
Application granted granted Critical
Publication of AT22178B publication Critical patent/AT22178B/en

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  • Instructional Devices (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Rechenlehrmittel. 
 EMI1.1 
 
Fig. 1 zeigt eine Vorderansicht der Maschine. Fig. 2 zeigt die Seitenansicht einer Wange, welche mit rechteckigen Löchern versehen, zum Einstecken und Festhalten der   Rechenstäbe   dient. Fig. 3 zeigt einen Rechenstab mit einem auf demselben befindlichen   verschieb- und auswechselbaren Bruchteil (1/3).   



   Wie aus der Zeichnung ersichtlich, besteht die Maschine aus einer aufrechtstehenden Wange, in welcher sich lose Stäbe befinden, welche beliebig über-oder untereinander in die mit Löchern versehene Wange eingesteckt werden Können. Auf diesen Stäben sind zerleg-und verschiebbare, abnehmbare Teile in der Weise angeordnet, dass dieselben der 
 EMI1.2 
 zu beweisen. Einen besonderen Vorteil vor den bisher bekannten Systemen erblickt der Erfinder darin, dass es sich bei den bisher bekannten Bruchrochenmaschinen nicht ermöglichen lässt, verschiedene Brüche wirklich anschaulich zu addieren, da nur an oben 
 EMI1.3 
 von den betreffenden Stäben herabzunehmen und dann auf einen leeren Stab zu bringen, diesen sodann unter dem Stabe, welcher   1/1   enthält, einzustecken, wodurch die absolute Gleichheit der beiden Grössen klar zu Tage tritt.

   Es erhellt hieraus, dass sich auf diese und andere Weise   hundorte   von Exempeln ausführen lassen, die eine Berechnung und   YergJeichl1ng   der einzelnen Brüche unter sich, wie im Verhältnis zur Einheit ausserordentlich deutlich veranschaulichen. Ebenso leicht lassen sich Subtraktionen ausführen, auch MultiplikationenundDivisionenkönnenmitdieserMaschinebewerkstelligtwerden. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Arithmetic teaching aids.
 EMI1.1
 
Fig. 1 shows a front view of the machine. Fig. 2 shows the side view of a cheek, which is provided with rectangular holes, is used to insert and hold the slide rule. Fig. 3 shows a slide rule with a displaceable and exchangeable fraction (1/3) located thereon.



   As can be seen from the drawing, the machine consists of an upright cheek in which there are loose bars which can be inserted into the cheek provided with holes as desired above or below one another. Disassemblable and displaceable, removable parts are arranged on these rods in such a way that the same of the
 EMI1.2
 to prove. The inventor sees a particular advantage over the previously known systems in the fact that with the previously known fracture ray machines it is not possible to add different fractions clearly, since only at the top
 EMI1.3
 to take it down from the sticks in question and then to bring it onto an empty stick, then insert it under the stick which contains 1/1, whereby the absolute equality of the two sizes becomes clear.

   From this it is evident that hundreds of examples can be carried out in this and other ways, which illustrate a calculation and comparison of the individual fractions among themselves, as in relation to the unit, with extraordinary clarity. Subtractions can be carried out just as easily, and multiplications and divisions can also be carried out with this machine.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Lehrmittel für Bruchrechnung mit Rochenkörpern auf wagerechten Stäben, dadurch gekennzeichnet, dass die Stäbe nur auf einer Seite durch Einstecken in die Löcher einer EMI1.4 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Teaching aids for fractional calculations with ray bodies on horizontal rods, characterized in that the rods are only inserted into the holes on one side on one side EMI1.4 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT22178D 1904-06-28 1904-06-28 Arithmetic teaching aids. AT22178B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT22178T 1904-06-28

Publications (1)

Publication Number Publication Date
AT22178B true AT22178B (en) 1905-11-25

Family

ID=3530200

Family Applications (1)

Application Number Title Priority Date Filing Date
AT22178D AT22178B (en) 1904-06-28 1904-06-28 Arithmetic teaching aids.

Country Status (1)

Country Link
AT (1) AT22178B (en)

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