I think it depends on several factors, including what sort of work you need to do and the age, temperament and number of children you have. I'm a single parent with one energetic child under the age of 5 and we live in a small one bedroom flat with no outside space. My little one is awake by 5:30am every day and wants to be doing things every minute of the day until bedtime. Even though my child will sit still to watch the tv for about an hour, I can't say that this is time I could use for work which required 100% concentration over a sustained period, as even when watching tv, my child wants me to interact by watching a funny bit of whatever's on tv, commenting on what is happening etc. (I'm not suggesting this is wrong by the way, but whereas I would previously have time to concentrate when my little one was at nursery, this isn't the case at the moment.)
As a flexible and very rough timetable, I would suggest:
- wake up and do usual morning routine (make beds, have shower etc)
- have breakfast together (maybe prepare it together if they're young enough to enjoy 'helping')
- help the kids set out a play activity (e.g. helping the kids build a train track / toy shop / pretend school using toys etc) and ask them to do this for 1 hour while you work
- Have a break, admire whatever the kids have been doing, do an activity together (e.g. drawing / school work)
- Get another hour's work done while the kids entertain each other / play / watch tv.
- Everyone tidies up then helps to prepare and eat lunch.
- Go for a walk and play some outside games to burn off energy
- Return home and help set up another activity before working for another 1-2 hours (depending on how good the kids are at keeping themselves occupied).
- From dinner to bedtime is a write-off work-wise but, depending on bedtimes, a parent can then get several hours work done in the evening.
In terms of home schooling, I personally wouldn't bother for a 4 and 6 year old. (I appreciate others have different views and needs; particularly with older children that need to complete schoolwork but aren't quite old enough to study on their own.) I tried a 'formal' style of learning with my little one and it made us both cross. Now, we read together every night before bed as usual, do art together (my little one often asks to draw pictures for the friends he can't see right now, which is great because it also gets a bit of writing practice in, tracing the dots to form a friend's name and brief message), practice counting and using different terms when we're playing a game in the park (e.g. collecting a certain number of sticks to build a house, how many do we have if the wind blows 1 or 2 away; using the measuring tape to measure household objects; measuring liquids and weight when making a cake etc.) Is a 'maths' lesson as long as it would be in nursery? Maybe not, but I view this time as reinforcing information and practicing it.
Simply do the best you can. If you've got deadlines, prepare a realistic project plan so you know if you're on track to meet them and, if you can't, ask for help sooner rather than later. Don't feel guilty about getting some sort of mystical work/life 'balance' right. If, for what will hopefully be a relatively brief period in the grand scheme of things, you need to work x hours a day (whatever your specific number is) to keep a roof over their heads, the kids will just have to cope with slightly less attention.
I don't get those having a pop at ColourMyDreams. This is how employment works. You agree contractual terms and if you don't like them, you seek work elsewhere. If you disagree with employment law / state support available for those struggling in various areas, campaign for change rather than having a pop at those who run a business in line with current laws and regulations.