GB234782A - A device for teaching number in combination, analysis, factors, and multiples - Google Patents
A device for teaching number in combination, analysis, factors, and multiplesInfo
- Publication number
- GB234782A GB234782A GB9114/25A GB911425A GB234782A GB 234782 A GB234782 A GB 234782A GB 9114/25 A GB9114/25 A GB 9114/25A GB 911425 A GB911425 A GB 911425A GB 234782 A GB234782 A GB 234782A
- Authority
- GB
- United Kingdom
- Prior art keywords
- teaching
- numbers
- frame
- blocks
- factors
- 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
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)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
234,782. Passmore, A. A. May 27, 1924, [Convention date]. Teaching arithmetic. -A device for teaching arithmetic consists of a tray a, Fig. 1, or a frame e, Fig. 6, divided into equal spaces by vertical lines which are numbered consecutively, and a number of movable blocks c made to varying lengths to the same scale to fit in the tray or slide in the frame. The blocks c are numbered in accordance with their length, and, as shown in Fig. 1, may be used to demonstrate the combinations of numbers which add up to 10, or to illustrate the factors of 10. To effect the same for numbers less than 10, a rectangular mask may cover up the 10, 9, or other column on the tray a, or a mask m, shaped as shown in Fig. 8, may be used to demonstrate the combinations of numbers which add up to 7, or to any other number less than 10. The frame e, Fig. 6, is formed at the front with a shelf g at the back of which is a groove in which the blocks c slide. This frame can be used for teaching addition, subtraction, or for teaching the factors of numbers up to 144. For subtraction, a stop k is set to the required number, and a block c corresponding to the number to be subtracted is moved against the left edge of the stop. By reading from the left edge of the block c, the answer is obtained. The stop k is held in position by a clip l, or by a pin engaging in one of a series of holes in the groove in which the slides c move. Blind persons, teaching.-The number blocks may be provided with Braille characters.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU234782X | 1924-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB234782A true GB234782A (en) | 1925-09-10 |
Family
ID=3712572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9114/25A Expired GB234782A (en) | 1924-05-27 | 1925-04-06 | A device for teaching number in combination, analysis, factors, and multiples |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB234782A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2383182A (en) * | 2001-10-16 | 2003-06-18 | Kim Lesley Ridgeway | Mathematical learning device comprising indicia bearing rods. |
| GB2437356A (en) * | 2006-03-17 | 2007-10-24 | John Balfour Cockburn | Teaching Apparatus, e.g. for Maths, Question and Answers, and Writing |
-
1925
- 1925-04-06 GB GB9114/25A patent/GB234782A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2383182A (en) * | 2001-10-16 | 2003-06-18 | Kim Lesley Ridgeway | Mathematical learning device comprising indicia bearing rods. |
| GB2437356A (en) * | 2006-03-17 | 2007-10-24 | John Balfour Cockburn | Teaching Apparatus, e.g. for Maths, Question and Answers, and Writing |
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