Gr 6–8—At a glance, the striking covers and multitude of visual elements in these books will attract browsers but upon closer inspection serious readers will be frustrated. The main narratives are too short for in-depth treatments. Some terms are not explained and multi-faceted topics, such as the human reproductive and endocrine systems, are glossed over. Diagrams and visuals are sometimes poorly placed or indecipherable. Labels are insufficient and hard to read. A limited glossary, an index with unreliable entry points, and a scattered collection of facts in sidebars and photo captions provide little support for the main texts.