Teacher Created Resources is an educational publishing company founded by Mary Dupuy Smith, a classroom teacher, The concept behind this successful line is that theyre aware first-hand about teaching, All the products are created by teachers for teachers and parents, , Use alone or with related Incentive Charts, 378 self-adhesive stickers per pack, Approx 0, 5"" round, Stickers are acid-free and lignin-free per Industry Standards, SKU: TCCR2089