Gr 9 Up
Solid coverage on key topics in physical, chemical, biological, and Earth sciences. Along with clear explanations of the basics, the books discuss major scientists and their research that led to today's understanding of the subjects. Sidebars highlight particular research initiatives or give additional explanations when necessary. Photographs, charts, and diagrams effectively illuminate the texts, whose presentations vary. For example, Planetary Motion expertly uses analogies to explain difficult concepts, while the other titles do not; Natural Selection is exceedingly readable while Big Bang , with its emphasis on math, is difficult to wade through. Text and information heavy, these titles offer a wealth of material, including useful further-reading lists. Great for curricular supplementation, report writers, and science buffs.