eader offers a hilarious and unique approach to addition and subtraction, courtesy of the Berenstains. The gradually increasing number of bears on wheels--unicycles, bikes, and trikes--engage in silly antics that will make beginning readers giggle as they learn beginning math skills. Step 1 Readers feature big type and easy words. Rhymes and rhythmic text paired with picture clues help children decode the story. For children who know the alphabet and are eager to begin reading.