Try to count, how many
To the contrary, relatives by the size, but a different form.
Turn a vnim scientific research institute of the child that water can take any form and quantity waters does not depend on a capacity form.
Try to count, how many small glasses will be located in a big bottle for filling of a bottle use crows ku, doing on it marks by a marker, having poured each following portion.
And if then to pour out back in glasses?
Will be whether all of them are filled?
Or water in a bottle remains?.