在线阅读本书 The newly revised and updated Everything You Need to Know About series provide kids and parents with a quick refresher to 4th through 6th grade curriculum topics. The organization and scope of these concise homework-help guides make them an essential reference resource. Researched according to middle-grade curriculum and current textbooks, and created in conjunction with subject experts, these titles answer kids' most frequently asked homework questions. In AMERICAN HISTORY, students will find everything from accounts of the first Americans to the 21st Century.