When I have some time at the end of the day, I play IT CAN BE with my class. This is a math game where the child holds up an addition sum and the class has to give the problem. For example, if the card says 17, someone called on might say, 9 + 8. If the flashcard says 8 + 9, the child holding the card would say, IT COULD BE BUT IT'S NOT. If the child says, 8 + 9, the child holding the card would say, 'IT COULD BE AND IT IS. The children have to give the problem exactly as it's written on the card. If a child gives a completely incorrect answer such as 9 + 6, the response is, IT COULDN'T BE. The child that answers correctly gets to be the next one to hold up the flashcard. This is a great activity for enhancing math thinking skills.