Popular Playthings Magnetic Match Rings Popular Playthings Magnetic Match Rings is a fun way for children to learn about how magnets work Select one of 40 pattern matching challenges and stack the rings onto the post to see if they attract or repel each other Includes 10 magnetic rings, 1 stacking post, and challenge booklet For children age 3 and up Popular Playthings provides award-winning toys that encourage learning, creativity, social interaction, and good old basic fun