Each magnet is clearly marked with an N or an S to identify the two poles. As children explore what metals can be attracted to or repelled from the magnets, they can also discover how to solve simple problems. Play with your child to learn if a paper clip can be picked up by the magnet or try moving that paper clip across the table by using a magnet under the table to pull it along. Each magnet has a plastic coating on it to create a useable handle. This is a unique set that can keep kids exploring and learning and ready for more.