For the design concept,
Yoke Yake came from this original idea, which relate to rocking behavior. But rocking like that is not creative and no development for them. So, we utilize this original idea, to invent the creative rocking toy, for physical development, to use in their routine and socialize.
The device has 2 in 1 usage.
First! Rocking in forward – backward, which is the basic practice, to know front-back direction
Second! Rocking in all around direction, is the upper level, to know the direction of front,back,left and right