has it's origins as a public holiday in the U.S.A. and most countries celebrate this day on the second Sunday of May, or in March. Mothering Sunday is a Christian celebration and almost always occurs in March, and falls on the third Sunday in Lent. For a full list of dates, please see this guide.
This page has two prayers - one for young children and toddlers and another for older children to say or write about their Mother's:-
A Prayer for My Mummy
(a short Mother's Day prayer suitable for young children to write or say about their mum)
Thank you for my mummy.
She looks after me, plays with me,
Listens to me, and makes me laugh.
She works very hard and sometimes she gets tired.
Please give her good sleep.
Help her at work.
Give her happy times,
And lots of hugs and kisses.
(a Mothering Sunday prayer for young children from www.lords-prayer-words.com)