Variation and Classification

These titles provide an in-depth look at life processes. The books stress key features of science teaching including scientific inquiry, use of ideas and evidence in science, planning, evaluation, and developing investigative skills. Sample experiments and data illustrate best practices in a real context. Case studies of key experiments and discoveries in the history of science are presented as box features (including modern discoveries as well as those with historical importance). Information on the most recent developments in research demonstrates the progressive nature of science.