"A revised and updated edition of the bestselling definitive guide for parents and teachers of fourth grade-age children, featuring all new full-color photographs and illustrations and revised material. This is a necessary guide for all parents and teachers of fourth grade-age children, as established by the Core Knowledge Foundation, an educational reform movement based on the premise that a grade-by-grade core of common learning is necessary to ensure a sound and fair elementary education, and lay the groundwork for a lifetime of learning. With its comprehensive curriculum establishing a sound basis in the fundamentals of math, art, history, language arts, science, and technology, the phenomenally successful Core Knowledge series has become an esteemed tool for parents and teachers striving to better educate today's children. FORTY PERCENT NEW MATERIAL"-- Provided by publisher.