A.S.
Check out my website at www.makemoneyonline.tonoftips.net. It has a lot of things that I do to supplement our income.
Since you have experience as a teacher you can check into online tutoring or tutoring in your area. You can also score tests online. Here is an online tutoring website http://www.tutor.com/apply
If you are a good writer check wordgigs, textbroker, and bright hub.
You can always try your hand at blogging. I am part of a great program that teaches you how to make a passive income with blogging. I have been joined for over 1 month now, and have already started to see a little bit of earnings. I have also learned so much about websites and how to monetize my blogs. You do have to pay to join, it $20 a month, but I haven't seen anyone who didn't think it wasn't worth it. if you would be interested check it out at http://www.thenicheblogger.com/amember/go.php?r=3549&...
You could also check into daycare in your home. You don't have to do it full time just find a kid to watch part time depending on how much money you need. Doing it part time will also give you days with just your own children and days to get errands done.
Check out the forum at workplacelikehome there are a lot of great leads for work at home.
If you have any questions about any of this I would be happy to answer them.