If they are pets for your kids then you probably shouldn't have a male and a female in together, they are rabbits after all! They will continuously breed (like rabbits) and the female will probably eventually get sick due to the stress of constantly breeding. It's a really REALLY good idea to get at least the boy desexed, they're much calmer after desexing and you will find he won't fight with her anymore. It's a great lesson for the kids too, to have them desexed teaches your kids about responsible pet ownership. Constant breeding doesn't really teach the kids much about responsible pet ownership and is not great for the animals either.
For now definitely keep the parents separate, the male is not good to have around the babies. Plus the doe (the girl) will have come into heat within 48 hours of giving birth - so she might be pregnant again already. You sound like you haven't bred her on purpose, and I would suggest not breeding her again. Trust me, it's very very hard to find loving homes for rabbits, many are neglected once the cuteness wears off (within 6 months) and either end up escaping or being dumped. Pet shops are no better, anyone can buy a bunny and it ends up forgotten in a hutch, succeptible to myxo infection or dies in the first weeks due to hypothermia overnight. Lots of rabbits end up in shelters (just like dogs or cats) but are hard to adopt out because they're not cute like the babies in the pet shop - there is no need for more. Sorry, I'll get off my high horse now, just wanted to point that out.
Make sure she has a good supply of food - a good quality mix or pellet (preferably not the supermarket stuff, it tends to be not much good) and lots of HAY. Hay is the most important thing in a rabbit's diet, as fibre is what they're designed to digest. If you can get a bale of LUCERNE hay that's the best thing to give her, as it's got plenty of calcium and energy to help fuel her during lactation. Fresh water every day is important too of course!
She'll only feed the babies once or twice a day for 10-15 minutes at a time, so don't worry if you don't see her feeding them. Does tend to be really sensitive about the smell of their babies, so if you can try to get the kids to "look but don't touch" for at least the next 3 weeks until the babies are more developed and are starting to wean themselves.
The babies should be just about weaned by the time they're 6 weeks old, at that age you will need to sex them and separate the boys from the girls, or else the boys will start impregnating the others - mum first then their sisters.
I know that I'm prattling on a lot but I've dealt lots with pet rabbits and breeding in the last few years. PM me if you like and I can give you some great links to rabbit websites with excellent information. Hope the babies go well for you!
