These scratch cards reward students for their good behavior and excellent work. Create rewards for children and cover it up with a scratcher sticker so they can reveal their prize. The back provides spaces to write about the recipient and why they deserve it! Includes 4 different messages. Paper. (4 dozen per unit) 5 1/2"" x 4 1/4"" OTC" Want to send a nice message quickly, easily, and inexpensively? Just jot down a quick note along with the address, add a stamp, and drop this colorful postcard in the mail! This postcard measures 4" X 6". Printed on heavy paper. Each pack includes 30 postcards in the same design.