Explains what hydrology is, shows the impact of water on human history, and looks at water's role in climate, the water cycle, and the role of hydrology in the contemporary world.
Introduces the history and importance of food safety, the bacteria that cause food to be unsafe, safety in the food industry both in the United States and around the world, and what to do to keep food
Recounts the origins of individual rights in the colonies and the effort to add explicitly stated rights to the Constitution, accomplished in its first ten amendments, and discusses their meaning and
Spiders and insects have a lot in common. Both are small animals with many legs, and most people do not like them.A True Book: Animal Kingdom series introduces young investigative readers to animal sp
Provides step-by-step instructions for experiments with soil, including comparing different compositions, how well water absorbs in different types, and how it acts as a water filter.
Describes experiments that can be performed using solar energy in order to learn about its properties, including how different colors absorb sunlight, if it cleans dirty water, and whether it can cook
Describes the legislative branch of the United States government, and discusses each of its two parts, how it works, its origins, and notable events in its history, including impeachments and declarat
Discusses the meaning and purpose of a constitution; recounts reasons why the United States needed one in the 1780s and the events of the Constitutional Convention; and describes the Constitution's ma
Create exploding toilet volcanoes, oozing sink slime, and bubbling bathtub cauldronsall in the name of science! Each step-by-step experiment uses household and other easy-to-find materials so the youn
Unlike most other planets, Venus can be seen from Earths surface with the naked eye. Only the moon burns brighter in the night sky. Readers will learn why Venuss thick clouds help make the planet so h
From pie charts and bar graphs to calendars and sheet music, charts and graphs help us organize complex information and present it in a way that is easy to understand. Readers will learn to identify a
