Simple text, illustrations, and photographs present information on planet Earth, such as Earth being the only known planet with oceans on it.
General Note
Includes an access code for supplemental materials available online.
Content Note
What is Earth? -- How big is Earth? -- What is Earth made of? -- What does Earth look like? -- What is the Grand Canyon? -- What is Earth's moon? -- Who discovered that Earth is a planet? -- How is Earth different from other planets? -- How do we learn about Earth today? -- Earth facts.