But someone I'm really proud of, mashaa Allah, is R. She will be seven at the end of this year, and as far as I can remember has never fasted a full day, before this Ramadan. She hasn't missed a single day! On Sunday she woke up for suhoor and kept fasting through-out the day, mashaa Allah, the other days she's had breakfast with her sisters and then fasted.
S has fasted a few half days, and T has fasted some thirds of days (?). T has always had a good grasp of what it means to be fasting, mashaa Allah (could it be because she was born in Ramadan?!). I manage to keep her mind off food before iftar, when she craves something, by asking her "Aren't you a big girl?" "Oh yes, I'm a big girl" she goes, and sticks out her tongue: "Look, I'm fasting!"
Here are some advice about children and fasting (courtesy of sisters on a muslim home ed list), in shaa Allah:
What is the ruling of the fast of a young (child) who has not yet attained puberty?
Response: The fasting of a young (child), as has preceded us, is not obligatory upon him. However, it is upon one who is in charge of his affairs to command him to (fast) and thereby prepare him (for it). And the fast of such a young (child) is (regarded) as a sunnah, in that there is a reward for him fasting, however, there is no sin upon him should he stop.
Shaykh Ibn 'Uthaymeen
Fataawa Ramadhaan - Volume 1, Page 237, Fatwa No.182;
Fataawa ash-Shaykh Muhammad as-Saalih al-'Uthaymeen - Volume 1, Pages 493
Rubbayi' bint Mu'awwaz (Radhiyallaho anha) says:
"Once the Prophet (Sallallaho alaihe wasallam) enjoined on us to fast on the 10th of Muharram. Since then we have always been fasting on that day. Even the children were made to fast with us. When they cried out in hunger, we diverted them with toys made of cotton flakes till the time of Iftaar."
In 'Umar's (Radhiyallaho anho) time, a person was arrested by the police for drinking in Ramadhan.When he was brought before Hadhrat 'Umar (Radhiyallaho anho), he said to him: "Woe to you! Even our children are keeping fast in this month."