These posters are 11" x 17". They need to be printed on a printer that accepts 11" x 17" paper. Or you can have them printed at an office supply store. Use them for any topic- classroom rules, directions, thoughts, brainstorming, etc.There are posters with just the light bulb, and 3, 4, 5, 6, 7, 8 and 9 speech bubbles. Directions for adding text on your PC are included.