Simple line and circle characters gently lead children into literacy and geometry. Their Hide and Seek game encourages visual discrimination, and the story words written both vertically and horizontally on the same page encourage an understanding that letters make words that have meaning. The characters tend to engage a child's imagination in such a playful way that learning happens easily. Hands-on tracing of the characters offers a second pathway to the brain. Most children like Limber Line and Circle O; and what we like, we tend to remember.