





To create the situations developing visual and acoustical approximate reactions, their interaction.
To cause reaction of the child to suddenly arising sounds.
To begin representation of a subject with acoustical influences.
At emergence of acoustical reaction start, blinking to carry out also display.
With a rattle or a hand bell To develop acoustical concentration on the sounding subject, by the adults voice which is out of sight of the child.
The child has to concentrate at a strong sound.
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