The numbers 1 through 31 atop a duck. The duck measures 2 inches square. There are also 5 blank ducks so that special days such as holiday, birthday, or no school can be written on them. These can be used anytime during the year for calendar numbers or for a themed activity in a math center.
If you like these ducks, you might also like my other calendar designs. Check out my pigs, frogs, leaves, sailboats, pumpkins, shamrocks, and more. If there is a certain shape you are looking for or you need a different size for your calendar, let me know and I'll be happy to put something together for you.