Describes how the electoral college works and answers such questions as "What is the difference between the popular vote and the electoral vote?" and "Why doesn't the popular vote decide the election?
Students will learn positive and negative integers through the survey of the extreme climates and temperatures throughout the world. Includes comparative timelines of temperature ranges from the Gobi
Explains the history of written numbers, from ancient Roman numerals to the invention of the Hindu-Arabic numeral system and the spread of the Arabic numeral system around the world.
Gives facts about familiar animals, such as how often a snake sheds its skin and how many pounds a baby blue whale gains in a week, and shows how to use multiplication to determine further information
Describes the history of the use of calendars in North America, from ancient medicine wheels and pictograph timelines to modern Native American calendars.
Explains what symmetry is, describes the different kinds of symmetry, and gives examples of symmetry seen in the real world, including in plants, animals, and architecture.
This colorful volume uses the division of three-digit numbers by one-digit numbers to illustrate the work that goes into creating a city park. Includes fun facts about marigolds, tulips, sunflowers, a
Introduces different types of hikes, describes what you can see on a hike, follows a one-mile hike, and explains how to convert fractions of walking distances to decimals.
