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Gr 4-8 This unique title uses geometry to discuss the varying strengths and capabilities of different animals. In a chatty tone, Davies starts off by describing the strict rules that control what bodies can and cannot do. She goes on to explain how the strongest animals are much smaller than humans. "Some important features of bodieslike how much food and air they needdepend on vol...Log In or Sign Up to Read More

With yet another fresh angle on the life sciences (Extreme Animals, rev. 1/07; What's Eating You?, rev. 1/08), Davies considers the physics of anatomical structures by explaining the mathematical relationships among the properties of length, surface area, cross section, volume, weight, and strength. She compares human capabilities to those of animals such as flies, water striders, and geckos in order to show how smaller organisms—with ...Log In or Sign Up to Read More

Davies considers the physics of anatomical structures, comparing humans' capabilities to those of smaller animals such as flies and geckos...Log In or Sign Up to Read More

With so many books on animals written for children, it’s remarkable that this particular subject is so rarely discussed. Just the Right Size: Why Big Animals Are Big and Little Animals Are Little starts with a big concept, which author Nicola Davies calls the “Big Thing, Little Thing rule.” She uses this rule to explain dozens of cases. Why does the ratio of surface area to volume limit the s...Log In or Sign Up to Read More