Let's Investigate Ser.

Kids love to explore, question, examine . . . investigate, because the world is full of fascinating mysteries. Created especially for younger readers, this engaging reference collection is filled with striking images and clearly written, fact-filled text. "Let's Investigate invites children to discover volumes of intriguing facts about the would around us--from agriculture and economics to geography and nature. Two new series featuring the fascinating history of transportation and an inspiring look at the U.S. government add to a variety of topics that will captivate readers and send them investigating your library for more fascinating facts.