Stille, Darlene R

A simple introduction to different kinds of underwater vehicles and how they are used.

This book uses news stories and everyday applications to explain the science behind pandemics.

This book uses news stories and everyday applications to explain the science behind ultraviolet rays.

This book uses news stories and everyday applications to explain the science behind genetic engineering.

Introduces the planet Mars, exploring its atmosphere, composition, and other characteristics and looking particularly at how humans learned about the only planet that can be seen clearly from Earth.

Identifies some of the natural resources that exist in the world, describes the difference between renewable and nonrenewable as related to natural resources, discusses the need to conserve fossil fuels, and examines alternative energy sources.

Presents the lives of our United States Presidents from 1890 through 1930 like Theodore Roosevelt, William Taft, Woodrow Wilson, Warren Harding, and Calvin Coolidge. Describes their political views, their family life, achievements, and legacy.

Presents a study of soil and discusses how it forms, the components that make up soil, soil types, and how soil is used.

Describes how igneous rocks are formed, where they are found, and their uses.

Describes how metamorphic rocks are formed, where they are found, and their uses.