Arithmetic teaching aid for primary school children - has several bars having circular holes into which cylindrical elements can be inserted, bars have between 1 and 10 holes and indicate numerical result

摘要

The arithmetic teaching aid includes a number of bars with circular holes into which cylindrical elements may be inserted. The set consists of bars ranging from 1 to 10 holes. These are duplicated. Combinations of different bars may be placed side by side and cylinders are inserted to indicate a result. For example, a 5 capacity bar placed with a 3 capacity one over a full 10 indicates the result of adding 5 to 3. ADVANTAGE - Very simple to use, clear visual indication of result.