When your kids get old enough, a useful life skill for them is to know how to mow a lawn. Not only will this help you out, but it will give them a useful life skill that they can use to make money if they want to.
There are a lot of things that you want to teach them about lawnmowing besides the actual logistics of going row by row across the lawn. You want to teach them how to remove obstacles beforehand and to be careful what they run over. You want to teach them how and where to dump out the grass clippings, and where and how to refuel and prime the lawn mower.
One good thing that we did going up was splitting the task between two or more siblings so that nobody felt too overwhelmed by it on Saturday. I took the front yard one week and the backyard the next week and switched off with my younger brother. The parents paid us for the service, which gave us a bit of spending money, which became useful especially as we got a little bit older.