http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2025678-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c8095202f48c0b5b941e321fbb83180f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G09B19-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G09B19-02 |
| filingDate | 1979-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1980-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2025678-A |
| titleOfInvention | Mathematical apparatus |
| abstract | Apparatus for use as an aid in teaching mathematics comprises rectanguloid elements of different shapes and sizes and having size-related colour characteristics. The constituent elements include a multiplicity of small same colour cubic blocks 2, a group of square slabs 3', 3'', 3''' of a colour different from that of the small cubic blocks, each slab having a thickness equal to the edge length of one of such blocks and a side length which is a whole number multiple of that length, and a group of bars 4', 4'', 4''' whose colour differs from the colours of the cubic blocks and slabs, each bar having a width and thickness equal to the edge length of one of said blocks and a length equal to the side length of one of the slabs. The apparatus can additionally include a large cubic block 1 of edge length also equal to the side length of one of the slabs. The apparatus is useful for a variety of purposes including the explanation and representation of fractions and their multiplication and of algebraic formulations and processes. <IMAGE> |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2146157-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021130395-A1 |
| priorityDate | 1978-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID454006091 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID11178 |
Total number of triples: 14.