Happy/Sad stickers diameter: 1 inch (25.4mm) and one package contains two roll of 500 happy face stickers with a variety of uses. Put a smile on every kids face with these bright and colorful happy face behavior stickers.Teacher behavior sticker can be used for teacher supplies, reward charts, awards and crafts. Chart stickers clearly allow teachers to monitor students' behavior in a non-threatening, friendly manner. You could provide a reward or prize to the students that have the most happy face stickers at the end of the week.Happy face sticker behavior charts are an extremely valuable teaching and learning tool, keep these stickers on hand at all times for use with one's behavior chart.They are great tool for teachers,These stickers can help reinforce positive behavior. By creating a visual for the child it can help them understand that what they did is good or bad and what needs to be changed. Children could even wear them on their hands or cloths if they like.4 Style self-adhesive happy face stickers/ frowny face stickers available for select : Happy/Sad, Red, Yellow. Easy peel and apply, sticks well to most surfaces, Great for class, party, reward. As color code labels, the classroom and school uses are endless.Durable High-Quality Labels - For all types of uses, such as personal or for other purposes, using the durable-high quality peel off labels will help you maintain professionalism with its fine feel and finish. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.