DE177931C - - Google Patents

Info

Publication number
DE177931C
DE177931C DENDAT177931D DE177931DA DE177931C DE 177931 C DE177931 C DE 177931C DE NDAT177931 D DENDAT177931 D DE NDAT177931D DE 177931D A DE177931D A DE 177931DA DE 177931 C DE177931 C DE 177931C
Authority
DE
Germany
Prior art keywords
odd
summands
tasks
slider
images
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
DENDAT177931D
Other languages
German (de)
English (en)
Publication of DE177931C publication Critical patent/DE177931C/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)
  • Toys (AREA)
  • Displays For Variable Information Using Movable Means (AREA)
DENDAT177931D Active DE177931C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE177931C true DE177931C (enrdf_load_stackoverflow)

Family

ID=442368

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT177931D Active DE177931C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE177931C (enrdf_load_stackoverflow)

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