The 3D animated series WordWorld incorporates letters into the characters and animation to help kids understand that letters make sounds and, when put together, spell words. The comedic plots center around the WordFriends -- Sheep, Frog, Duck, Pig, Ant, and Dog. The animals are drawn as letters that form the shape of their bodies, so kids can see the word "Dog," for example, as they watch Dog. In each episode of WordWorld, the friends tackle daily difficulties, which they solve by helping each other and using their word skills to "build a word." Viewing children watch as letters of a word come together and then morph into the object the word represents, helping kids understand the connection between letters, sounds and words. (PBS)