File:Using-an-Abacus-04.png
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Using-an-Abacus-04.png (490 × 376 pixels, file size: 22 KB, MIME type: image/png)
Captions
Captions
Generic abacus, subitizing and bi-quinary coded numbers.
Summary
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| Description |
English: In the upper image (a) the number 18 is represented in two regions (rods); one of them contains 8 counters that are above the subitization limit. To simplify the reading of the abacus we can: either use a different type of counter with a replacement value of, for example, five (b), or subdivide the regions or rods into two zones: one in which a counter takes the value one and the other in which it takes the replacement value five (c,d). |
| Date | |
| Source | Own work |
| Author | Jccsvq |
Licensing
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I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
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- to share – to copy, distribute and transmit the work
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- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:12, 14 September 2021 | | 490 × 376 (22 KB) | Jccsvq (talk | contribs) | Uploaded own work with UploadWizard |
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