Winnie-the -Pooh

This classic books are not only favorites of children everywhere but they are also the perfect way to introduce children to the four temperaments at an early age. Through these charming stories they get to know Rabbit, the choleric, Winnie-the-Pooh, the phlegmatic, Tigger, the Sanguine, and Eeyore and Piglet the Melancholics. 
Children are not only charmed by the stories, but without even realizing it they learn to love the different kinds of temperaments and understand that they each have their own strengths. These books can also open discussions for parents and teachers to help children understand classmates, friends, or siblings that they may have friction with. By allowing them to understand the differences through cuddly characters, their differences may not seem so dramatic after all. – Kristie, Earthschooling.com