For attendance? A quick get to know you/math (counting and graphing) activity. Later in the year students can generate the questions and write them. Place on light colored paper, laminate, and questions can be added with white board marker.
MATH Area math game: Roll the dice and draw the area array on your own grid - first to fill it wins. Or 2 players choose a different colored pen each, use one grid and the player who cannot complete the last array is the loser.