Each volume in the wide-ranging Science Alliance series introduces a specific science concept to elementary-school readers. By keeping the language accessible and limiting the depth of coverage, readers should come away with a basic understanding of the topic at hand. Nearly every page pairs a short paragraph with a large color photograph or diagram relevant to the text. The books also feature simple experiments that demonstrate a particular concept and prompt critical thinking. Rather than assembling collective nouns, Animal Groups focuses on the advantages group living can provide, from safety to increased food supply to social orders. A teacher-activity guide precedes each book, and the concluding back matter is supplemented with reading-comprehension questions and online resources.