1. It is better not to lock the children up in the classroom, even to play.
2. A moment of silence and concentration is always good for all the children. But the prayer should not be compulsory. Those who want to do it will be encouraged.
I suggest that you put up a notice-board in the classroom with these words written on it in large letters:
“Mother is always here amongst us to help us and guide us.”
Most of the children will understand, and some are capable of feeling.
Ref: On Education