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"This informative book goes to great lengths to explain how scientists around the world use the metric system and related tools to help them compare, contrast, and analyze the measurement data they collect. Opportunities for hands-on learning make the content meaningful to readers as they refine their measuring skills."--

This engaging book explains how scientists use models to help them understand systems in the natural world. Readers learn about different kinds of models and discover the similarities and differences between models and the real objects and processes they represent.