DE180886C - - Google Patents
Info
- Publication number
- DE180886C DE180886C DENDAT180886D DE180886DA DE180886C DE 180886 C DE180886 C DE 180886C DE NDAT180886 D DENDAT180886 D DE NDAT180886D DE 180886D A DE180886D A DE 180886DA DE 180886 C DE180886 C DE 180886C
- Authority
- DE
- Germany
- Prior art keywords
- arithmetic
- whole
- board
- objects
- rows
- 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
Links
- 229920002160 Celluloid Polymers 0.000 description 1
- 241000121237 Nitrospirae Species 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
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)
- Drawing Aids And Blackboards (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE180886C true DE180886C (cs) |
Family
ID=445113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT180886D Active DE180886C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE180886C (cs) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2482402A (en) * | 1948-05-27 | 1949-09-20 | James N Corcodilos | Educational toy blocks |
-
0
- DE DENDAT180886D patent/DE180886C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2482402A (en) * | 1948-05-27 | 1949-09-20 | James N Corcodilos | Educational toy blocks |
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