Mortimer the bear helps young readers become familiar with the alphabet by looking for objects that begin with each letter.

Mortimer the bear uses his toys and other favorite things to help young readers become familiar with the letters of the alphabet.

Photographs of a teddy bear demonstrate the relationships shown by such prepositions as up and down, in and out, and through and between.

Text and pictures introduce a variety of antonyms such as transparent and opaque, shiny and dull, and hard and soft.