This product is really effective to teach children to write uppercase & lowercase letter, and number 1-10.HOW TO USE:1. Wipe & Clean Activity: You can put it inside plastic sheet and let your children trace it with erasable marker.2. Tracing using manipulative: Use popsicles, pom-poms, buttons, etc.3. Coloring: Color the letter using crayon, paint, pencil color, etc.DO IT 1-2 times a day so your children can remember.PLEASE do not share the file to other people / re-selling our file / ma