CH69648A - Illustrative apparatus for teaching elementary arithmetic - Google Patents

Illustrative apparatus for teaching elementary arithmetic

Info

Publication number
CH69648A
CH69648A CH69648A CH69648DA CH69648A CH 69648 A CH69648 A CH 69648A CH 69648 A CH69648 A CH 69648A CH 69648D A CH69648D A CH 69648DA CH 69648 A CH69648 A CH 69648A
Authority
CH
Switzerland
Prior art keywords
illustrative apparatus
elementary arithmetic
teaching
teaching elementary
arithmetic
Prior art date
Application number
CH69648A
Other languages
German (de)
Inventor
Krebs R Fr
Original Assignee
Krebs R Fr
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 Krebs R Fr filed Critical Krebs R Fr
Publication of CH69648A publication Critical patent/CH69648A/en

Links

CH69648A 1915-02-13 1915-02-13 Illustrative apparatus for teaching elementary arithmetic CH69648A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH69648T 1915-02-13

Publications (1)

Publication Number Publication Date
CH69648A true CH69648A (en) 1915-07-16

Family

ID=4317800

Family Applications (1)

Application Number Title Priority Date Filing Date
CH69648A CH69648A (en) 1915-02-13 1915-02-13 Illustrative apparatus for teaching elementary arithmetic

Country Status (1)

Country Link
CH (1) CH69648A (en)

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