Mortimer's math

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

With paintbrushes, buttons, crayons, and cups, a teddy bear helps readers learn to sort objects into sets using different criteria, such as color, shape, and texture.

With hats, plants, ribbons, and trains, Mortimer the teddy bear presents the language used to talk about size and shows how to understand and compare size.

A teddy bear uses flags, presents, buttons, balls, and coins to teach different shapes.

Using objects like socks, toothbrushes, and fruit, Mortimer the teddy bear helps the reader learn to recognize and form simple patterns.

A teddy bear introduces the numbers from one to ten with words, numerals, and pictures.