The wise men traveled from afar barring gifts. Because of the three gifts that were given to the Christ child we assume that there were three wise men. That fact won't even be on the children's radar. They are interested in the gifts that the magi (wise men) brought to baby Jesus. Gold, frankincense and myhr. What a magical way to present this story!
This story is found in three of the Gospels and in both Godly Play and Young Children and Worship books.