DE265451C - - Google Patents

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Publication number
DE265451C
DE265451C DENDAT265451D DE265451DA DE265451C DE 265451 C DE265451 C DE 265451C DE NDAT265451 D DENDAT265451 D DE NDAT265451D DE 265451D A DE265451D A DE 265451DA DE 265451 C DE265451 C DE 265451C
Authority
DE
Germany
Prior art keywords
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board
attached
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delimited
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
DENDAT265451D
Other languages
German (de)
English (en)
Publication of DE265451C publication Critical patent/DE265451C/de
Active legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00—Teaching not covered by other main groups of this subclass
    • G09B19/02—Counting; Calculating

Landscapes

  • Business, Economics & Management (AREA)
  • Engineering & Computer Science (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Vending Machines For Individual Products (AREA)
DENDAT265451D Active DE265451C (cs)

Publications (1)

Publication Number Publication Date
DE265451C true DE265451C (cs)

Family

ID=522686

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT265451D Active DE265451C (cs)

Country Status (1)

Country Link
DE (1) DE265451C (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514636A (en) * 1948-12-09 1950-07-11 Raymond A Glaze Visual arithmetic teaching apparatus
US2950542A (en) * 1959-07-09 1960-08-30 Alice M Steelman Educational aid for teaching arithmetic
US3002295A (en) * 1958-10-27 1961-10-03 Armstrong Vernon Lee Device for teaching number concepts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514636A (en) * 1948-12-09 1950-07-11 Raymond A Glaze Visual arithmetic teaching apparatus
US3002295A (en) * 1958-10-27 1961-10-03 Armstrong Vernon Lee Device for teaching number concepts
US2950542A (en) * 1959-07-09 1960-08-30 Alice M Steelman Educational aid for teaching arithmetic

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