Explore the history of America's national parks. The parks balance conservation with tourism. Nature and wildlife are protected there. The next time you visit a park site, think of the efforts of the people who saved these special places for future generations. This nonfiction book includes important text features such as a glossary, index, and table of contents to engage students in reading as they develop their comprehension, vocabulary, and literacy skills. The Reader's Guide and culminating activity direct students back to the text as they develop their higher-order thinking skills. Check It Out! provides resources for additional reading and learning. With TIME For Kids content, this book aligns with national and state standards and will keep grade 4 students engaged in learning.