Measuring Length (Explorer Junior Library: Math Explorer Junior)

Gr 1–3—These hands-on guides urge young children to grab a ruler, a thermometer, some empty bottles, and other such useful items—and get measuring! Along with instructions for several safe, simple projects and activities, each volume introduces relevant units of measure in different systems such as Fahrenheit and Celsius. Calendar offers two ways of writing dates as well as practice in creating schedules, while Clock presents exercises using both digital and face clocks. Both Measuring Length and Measuring Volume confusingly insert parenthetical metric equivalents after U.S. Customary units but don't get around to explaining the metric system until three quarters of the way through. Still, the bright, colorful design and overall enthusiasm make these appealing choices.