KIDSVILLE flash cards offer big learning power packed with near-endless possibilities. From interactive cards that create bed-time shadow art, to puzzle cards, they offer a fun, fast, easy, time-tested way to memorize new information and apply important concepts. Kids can use them solo, with a friend, or as a family activity.?Children's educational flash cards.  ?Laminated for long life and many time use. ?Premium quality 300 GSM card stock used.  ?Superior materials for durability and rough use. 3.5 x 5.5 inch size each.Kids and parents who use our flashcards for practice testing are using one of the most effective learning techniques available. A hundred years of research shows practice testing is highly likely to boost retention. Learning skills through game-play is an excellent strategy for many reasons. They are fun and motivating, and games also tend to help children deepen their understanding and reasoning. Because games feel more like play than work, they can encourage kids to explore and experiment with concepts more freely.