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1. (WO2013114316) TEACHING AID FOR INTRODUCING AND PRACTISING MATHEMATICAL OPERATIONS

Pub. No.:    WO/2013/114316    International Application No.:    PCT/IB2013/050833
Publication Date: Fri Aug 09 01:59:59 CEST 2013 International Filing Date: Fri Feb 01 00:59:59 CET 2013
IPC: G09B 19/02
G09B 21/00
Applicants: NAGY, Zsuzsanna
Inventors: NAGY, Zsuzsanna
Title: TEACHING AID FOR INTRODUCING AND PRACTISING MATHEMATICAL OPERATIONS
Abstract:
Teaching aid for demonstrating and practising mathematical operations, comprising a supporting board made as a rigid body of permanent shape and number fields containing at least one digit according to a pre-defined mathematical correlation and formed or arranged on the supporting board in rows and columns. The number fields (2) on said supporting board are arranged in the first, uppermost row in a manner bearing the digits (3) indicating numbers from 1 to 10 in increasing order from left to right; in the second and further rows below the uppermost row, number fields (2) are arranged on said supporting board in a manner that each number field (2) bearing digits (3) indicating numbers multiplied by a multiplication factor incremented by 1 compared to the multiplication factor used in a number field (2) arranged in the same column of a previous row just above the respective number field (2); wherein on the number fields (2) containing prime numbers indicators (4) of identical distinctive features but of a spatial design that makes them distinguishable from one another are formed; and on the number fields (2) containing numbers other than prime numbers, indicator parts (4a-4f) with distinctive features identical with the distinctive features of the unique indicators (4) associated with the prime number factors forming those numbers as their product are formed.