Teaching aid as an allocation game with mechanical solution verification, in three parts, for demonstration, individual elaboration, and visual instruction purposes

摘要

In both allocation devices of the teaching aid, problems can be solved by means of mechanical allocation and in particular in such a manner that in the event of a correct solution the correctness of the solution is confirmed although the solution verification can never be consulted prematurely. Allocation and solution verification are brought about using simple mechanical means: the allocation is on the one hand carried out by hanging plates on a kind of balance and the solution verification takes place by means of a counterweight based on the lever law. On the other hand, allocation is carried out with transparent material by simple insertion, the solution verification then being made possible by a special arrangement by means of a number lock. The third part of the game serves finally for storing and illustrating solutions once found.