Indirect
Red bars Material: red wooden bars.
The shortest bar has length of cm.
Each following bar is longer previous on cm.
The longest bar meter long.
All bars , cm wide and height.
Direct purpose: formation of the concepts the long short.
Indirect purpose: development of a motility, coordination of movements, formation of serial structures, preparation for work with the numerical bars.
Age: about three years.
How to work with material.
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