In this learning activity you'll explore Russia's Lake Baikal, the largest lake in the world.

Learners read about the five smallest countries in the world: The Vatican, Monaco, Naru, San Marino and Liechtenstein. A brief quiz completes the activity.

Learners read about the world's largest rain forest. A map is provided.

In this learning activity you'll read about the history of one of the world's newest nations and test their knowledge with a short quiz.

Students read about the world's active volcanoes that make up the "Ring of Fire." In an interactive exercise, they locate these volcanoes on maps.