I did this activity on the first day of school every year, but you can do it any time of the year! This packet has two 11" x 17" birthday graphs and four different 8 1/2" x 11" sheets of graphing squares (party hats, balloons, candles and blank squares). If you can't print 11" x 17" sheets at your home or school, most office supply stores will print them for $1 or less. Easy directions included.