GB1277721A - Arithmetical educational apparatus - Google Patents

Arithmetical educational apparatus

Info

Publication number
GB1277721A
GB1277721A GB361870A GB361870A GB1277721A GB 1277721 A GB1277721 A GB 1277721A GB 361870 A GB361870 A GB 361870A GB 361870 A GB361870 A GB 361870A GB 1277721 A GB1277721 A GB 1277721A
Authority
GB
United Kingdom
Prior art keywords
contacts
strips
numbers
question
lamp
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.)
Expired
Application number
GB361870A
Inventor
Margaret Mary Chidlow
Adam Wolicki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB361870A priority Critical patent/GB1277721A/en
Publication of GB1277721A publication Critical patent/GB1277721A/en
Expired 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
    • G09B19/025—Counting; Calculating with electrically operated apparatus or devices

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)
  • Instructional Devices (AREA)

Abstract

1277721 Question and answer device M M CHIDLOW and A WOLICKI 19 April 1971 [26 Jan 1970] 3618/70 Heading G5G A question and answer device for teaching arithmetical operations and co-ordinate referencing comprises two rotary switches the central contacts E, F of which are connected in series with an indicating device such as a lamp G and a battery H and the other contacts C, D of which are individually connected to the respective rows or columns of a co-ordinate array of conductive strips J, K. The uppermost strips J are perforated at I and are insulated from the lower strips K by a correspondingly perforated insulating plate L. In operation, a preprinted and preperforated overlay sheet (Fig. 4, not shown) corresponding to the operation (e.g. multiplication) to be tested is placed over the device, the dials for the two rotary switches are set to the two numbers to be multiplied &c. and a conductive plug (Fig. 3, not shown) is inserted into a selected perforation, the lamp G being illuminated only if the correct hole is selected. Although the switches are shown with ten contacts numbered 1-10 in modifications different numbers of contacts may be provided and the numbers need not be consecutive. The connections N, M may be interchangeable connections.
GB361870A 1970-01-26 1970-01-26 Arithmetical educational apparatus Expired GB1277721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB361870A GB1277721A (en) 1970-01-26 1970-01-26 Arithmetical educational apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB361870A GB1277721A (en) 1970-01-26 1970-01-26 Arithmetical educational apparatus

Publications (1)

Publication Number Publication Date
GB1277721A true GB1277721A (en) 1972-06-14

Family

ID=9761730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB361870A Expired GB1277721A (en) 1970-01-26 1970-01-26 Arithmetical educational apparatus

Country Status (1)

Country Link
GB (1) GB1277721A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2305810A2 (en) * 1975-03-27 1976-10-22 Buiche Jean Pierre Simple mathematical computation educational toy - enables user to perform simple add, subtract, multiply and divide operations by manipulating slide cards
US4021044A (en) * 1975-08-15 1977-05-03 Epoch Company, Ltd. Electrical circuit board game

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2305810A2 (en) * 1975-03-27 1976-10-22 Buiche Jean Pierre Simple mathematical computation educational toy - enables user to perform simple add, subtract, multiply and divide operations by manipulating slide cards
US4021044A (en) * 1975-08-15 1977-05-03 Epoch Company, Ltd. Electrical circuit board game

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees