Here’s a super-fun way to build reading fluency and master the first 100 sight-words—with instant reinforcement! Kids just look at the picture clues to help them decode a sentence, then touch a sight-word answer with the special pen to fill in the blank…and the pen tells them if they’re right or wrong. You get 53 double-sided cards; each measures 3 1/2" x 5 1/2". Power Pen sold separately.