Zero: Is It Something? Is It Nothing? (Discovering Science)
Grade 2-4-- This book shows clearly that zero can be both "something" and "nothing," depending on its position in a number. Specific examples show some ways in which zero figures in arithmetic computations and its place in all kinds of measurements. Occasionally there are not enough examples of each operation for readers to reason out the rule behind the example. Directions are given for constructing a paper odometer. Historical and anectodal facts add further to the book's interest. Cheerful watercolors of children of different ethnic groups and animal characters illustrate the text and make the material more appealing to young readers. --Margaret M. Hagel, Norfolk Public Library System, VA Grades 3-6Copyright 1989 Reed Business Information, Inc.