Young children learn to count and add with magnet manipulatives, a fun rhyme, and America's biggest, reddest, most-loved dog. A rhyming poem teaches children to count by ones to twenty-one, to count by two's to twenty, and to add one plus one, two plus one, and three plus one. Twenty-eight counters adhere to sturdy magnetic board book pages, giving children a hands-on experience and a deeper understanding of the concepts that are introduced. Clifford's smiling face encourages children every step of the way! It's the perfect book for budding mathematicians.