WO2004029907A8 - A didactic aid for learning a positional numbering notation system - Google Patents

A didactic aid for learning a positional numbering notation system

Info

Publication number
WO2004029907A8
WO2004029907A8 PCT/EP2003/010939 EP0310939W WO2004029907A8 WO 2004029907 A8 WO2004029907 A8 WO 2004029907A8 EP 0310939 W EP0310939 W EP 0310939W WO 2004029907 A8 WO2004029907 A8 WO 2004029907A8
Authority
WO
WIPO (PCT)
Prior art keywords
toothed wheel
numbered
transmission
toothed
subsequent
Prior art date
Application number
PCT/EP2003/010939
Other languages
French (fr)
Other versions
WO2004029907A1 (en
Inventor
Alessandro Quercetti
Original Assignee
Quercetti Alessandro & Co
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 Quercetti Alessandro & Co filed Critical Quercetti Alessandro & Co
Priority to AU2003268908A priority Critical patent/AU2003268908A1/en
Priority to EP03750677A priority patent/EP1543485A1/en
Publication of WO2004029907A1 publication Critical patent/WO2004029907A1/en
Priority to NO20041510A priority patent/NO20041510L/en
Publication of WO2004029907A8 publication Critical patent/WO2004029907A8/en

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)
  • Motorcycle And Bicycle Frame (AREA)
  • Machine Translation (AREA)

Abstract

A device for manual operation, intended for learning the concepts of a positional numbering notation system, comprises: - a number of numbered toothed wheels (20a,20b,20c) disposed side by side parallel to a plane (10), rotatable and located at different levels, each tooth of each numbered toothed wheel (20a,20b,20c) being marked with a digit and these digits being located in their correct succession, each numbered toothed wheel (20a,20b,20c) pre­senting some teeth available for being manually displaced; - and a number, corresponding to the number of the numbered toothed wheels (20a,20b,20c) less one, of transmission wheels (40a,40b), located side by side and rotatable, each transmission toothed wheel (40a,40b) meshing with the foregoing num­bered toothed wheel but not meshing with the subsequent numbered toothed wheel, and being provided with a carry tooth (42a,42b) suitable to displace between a non-operative attitude, in which it cannot engage the subsequent numbered toothed wheel, and an operative attitude, in which it engages the subsequent numbered toothed wheel in order to impart to the same an angular displacement, to each transmission toothed wheel (40a,40b) being associated a mechanism suitable for displacing the carry tooth (42a,42b) from its non­ operative attitude to its operative attitude when the transmission toothed wheel (40a,40b) lies within an arc corresponding to the operative engagement of this carry tooth with the subsequent numbered toothed wheel (20a,20b,20c).
PCT/EP2003/010939 2002-09-24 2003-09-18 A didactic aid for learning a positional numbering notation system WO2004029907A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2003268908A AU2003268908A1 (en) 2002-09-24 2003-09-18 A didactic aid for learning a positional numbering notation system
EP03750677A EP1543485A1 (en) 2002-09-24 2003-09-18 A didactic aid for learning a positional numbering notation system
NO20041510A NO20041510L (en) 2002-09-24 2004-04-14 Didactic tool for learning a position and number notation system.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO02A000829 2002-09-24
ITTO20020829 ITTO20020829A1 (en) 2002-09-24 2002-09-24 EDUCATIONAL AID FOR THE LEARNING OF A

Publications (2)

Publication Number Publication Date
WO2004029907A1 WO2004029907A1 (en) 2004-04-08
WO2004029907A8 true WO2004029907A8 (en) 2004-06-10

Family

ID=32040279

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/010939 WO2004029907A1 (en) 2002-09-24 2003-09-18 A didactic aid for learning a positional numbering notation system

Country Status (5)

Country Link
EP (1) EP1543485A1 (en)
AU (1) AU2003268908A1 (en)
IT (1) ITTO20020829A1 (en)
NO (1) NO20041510L (en)
WO (1) WO2004029907A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024040277A1 (en) 2022-08-22 2024-02-29 Von Oemis E.U. Device for counting and calculating

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1764915A (en) * 1930-06-17 vethe
US1508762A (en) * 1924-09-16 bacon
GB986698A (en) * 1962-07-27 1965-03-24 Ricciotti Romagnoli Apparatus for teaching multiplication to school children
US3696995A (en) * 1971-09-27 1972-10-10 William Kasner Calculator
GB1386365A (en) * 1972-03-01 1975-03-05 Kasner W Calculator
US4218609A (en) * 1978-05-01 1980-08-19 Yi Chin Educational mechanical calculator

Also Published As

Publication number Publication date
NO20041510L (en) 2004-04-14
EP1543485A1 (en) 2005-06-22
AU2003268908A1 (en) 2004-04-19
ITTO20020829A1 (en) 2004-03-25
WO2004029907A1 (en) 2004-04-08

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Free format text: IN PCT GAZETTE 15/2004 UNDER (71) REPLACE "ALESSANDRO QUERCETTI & C." BY "ALESSANDRO QUERCETTI & C.FABBRICA GIOCATTOLI FORMATIVI - S.P.A."

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