Eureka Back to School Classroom Supplies, Presto-Stick Green Star Stickers, 1/2'', 250 pcs Includes (250) self-adhesive green star stickers per pack. Green star stickers measure 1/2'' Reward your students and track their progress with Eureka self-adhesive green star stickers! These green star teacher stickers are great for classroom incentive charts, arts and crafts projects, rewarding good behavior, and more! Green star stickers are a great motivational classroom tool!