eeBoo's Opposites Puzzle Pair Set is a great way to teach children about opposites. A total of 25 opposites pairs such as up & down, big & little and more will keep preschoolers engaged in this word play. A perfect interaction for parent and child. The elder person may select a puzzle piece with a bluebird flying up with the word UP. The tot searches for the one on which the bluebird flies DOWN, and assembles the puzzle pair. This play encourages critical thinking skills. Engaging, accessible illustrations by Saxton Freymann.