Traces the history of weights and measures emphasizing the metric and British systems and discussing the likelihood of United States adoption of the metric system.
Two objects can be the same size, but not the same weight. Readers will learn not just about pounds and ounces, but also about how density, gravity, and mass affect weight.
Exciting pictures and interesting facts will help introduce readers to the ideas and units of height measurement. Including measurements of some of the highest places in the world, readers will be guided through understanding altitude, estimating, and the metric system.