Looking for ways to give your Lower Elementary students lots of practice with big operations using the Stamp Game? These printable cards each have a big addition, subtraction, multiplication, or division question on the front (in Montessori place value colors!) and the answer on the back is represented visually with the Stamp Game stamps. Self-correction is a breeze! You can purchase Operations Booklets separately for children to record their answers to these questions. You'll find your stude