These are nice pre-made flash cards that can be used with children Tom kindergarten/first grade all the way through elementary school. A lot of folks complain that they don't like the fact that it shows the answer on the same side of the card. It would have been better had the answers been printed on the opposite side, but they're small enough to cover with your finger while practicing with your student. Other than that, the cards do the trick when it comes to practicing math fluency facts!