Gr 3–5—This revised edition of the 2003 series combines rewritten texts, bright new illustrations, and a freshened up, more visually inviting design. Nonetheless, for all these changes, more is still promised than delivered: in The Digestive System, excretion is not discussed or even mentioned, and a chapter on the senses in Nervous System names only five. The existence of the endocrine and reproductive systems are not acknowledged at all. Furthermore, though some of the illustrations are micrographs or labeled, comprehensible schematic images, most of the pictures are uninformative filler photos of happy children at play or rest. The systemic approach and slightly higher level of detail make these natural companions for the publisher's "Take a Closer Look" series (2013), but neither are dependable first choices for serious study or assignment work.