We are using Singapore maths (standards edition). These books are really easy to use, pretty much open-and-go. There's a a textbook, workbook and home instructors guide. Sometimes there are lessons with manipulatives (interlocking cubes etc) or there's a little bit of practical work (eg filling jugs to compare capacity) so I'll look through our lessons at the beginning of the week to see if there's anything to prepare. Other than that you just open the home instructors guide and it says do this, explain this, do these pages of the books. The guide's really helpful for extra practice if necessary and there are extra books of additional exercises, although I haven't needed these much.
I don't have a strict schedule of how we progress through these books, but I have divided the year's worth of books up and noted roughly when we're due to start each chapter so I can keep track of whether we're ahead or behind what we should be according to his age. I want to have the flexibility to do extra practice on something if it's hard, or skim through it if it's easy.