This is a modified version of something I used in a previous school. I have adapted it to fit the school I work in now. I have left it filled in so you can see how I have used it. It is brilliant for saving time at the start of a lesson (children not writing dates, L.O.s WALT's etc) and it is a valuable reminder to the children of what you are actually looking for. I have them differentiated for my various ability groups (6!). Several colleagues have found them useful as well.
UPDATE MAY 2015: I have now added my modified version to incorporate the differentiated activity instructions (Bronze, Silver, Gold and Platinum) again, I have left it completed so that you get the idea of what can go where.