Keeping track of daily assignments has always been a struggle. I've tried several different methods - handwritten, daily assignment sheets, weekly assignment sheets, pre-printed, blank sheets with handwritten assignments. None of them work, mainly because we can't keep track of the sheets of paper and my children forget to check what has yet to be done.
So, I went back to something I used last year.
I have all our subjects listed, with columns for each child, written with wet-erase markers. Assignments are written by me daily with dry-erase markers. It is easy and impossible to misplace. :) (Please note that every single assignment from this chart is done. That hasn't happened since then, but I wanted to make sure you saw this it does happen here occasionally.)
I have also started using the Simply Charlotte Mason web-site organizer. I used to think the $10/month was too much, but after seeing it recommended by Christy at A Common Shepherdess, I decided to sign up for the 30-day trial. I figured if I used it for those 30 days, it would be worth the money (seeing as I've never stuck with any organization method that long - I am so ADD at times). I did and it is! I love it. It's easy to see daily assignments and check them off throughout the day. If I forget something, I can go back later and do it. Easy-peasy.
Another advantage to this method is that I get a break from the paper monster that threatens to take over my home. :)