AU210168B2 - Arithmetical teaching device - Google Patents

Arithmetical teaching device

Info

Publication number
AU210168B2
AU210168B2 AU7817/55A AU781755A AU210168B2 AU 210168 B2 AU210168 B2 AU 210168B2 AU 7817/55 A AU7817/55 A AU 7817/55A AU 781755 A AU781755 A AU 781755A AU 210168 B2 AU210168 B2 AU 210168B2
Authority
AU
Australia
Prior art keywords
teaching device
arithmetical
arithmetical teaching
teaching
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
AU7817/55A
Other versions
AU781755A (en
Inventor
Francis Howman George
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
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of AU781755A publication Critical patent/AU781755A/en
Publication of AU210168B2 publication Critical patent/AU210168B2/en
Expired legal-status Critical Current

Links

AU7817/55A 1955-03-23 Arithmetical teaching device Expired AU210168B2 (en)

Publications (2)

Publication Number Publication Date
AU781755A AU781755A (en) 1955-12-22
AU210168B2 true AU210168B2 (en) 1955-12-22

Family

ID=

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