These are amazing! Write on the 8x7” surface with the magnet pen, then erase your creations by simply rub gently with "eraser end" of pencil-stylus or use finger and light touch. All marks disappear, with no mess! Write, then erase letters using the same motor pattern! Sneaky! For motivating fun, try using the pen under the board. Available individually or set of 3 with 3 boards and 3 stylus like magnetic pencils.