Stille, Darlene R

Describes the structure and functions of plant cells; presents a look at plant reproduction, covering mitosis and meiosis; and explains how plant cells are studied.

Presents a short study of cells, how they work together to help the body to breathe, digest food, and heal injuries.

A biography of chemist Percy Lavon Julian, discussing his early life in the south, his struggles to pursue his career in the face of racial prejudice, and his pioneering work in medical research.

Introduces the planet Uranus, exploring its atmosphere, composition, and other characteristics and looking particularly at how humans learned about the seventh planet from the sun.

Examines the composition of Pluto and describes current theories about its formation and the features that make it unique.

Introduces the planet Neptune, exploring its atmosphere, composition, and other characteristics and looking particularly at how humans learned about the gas giant that is four times the size of Earth.

Explains how numerous science concepts are at work during gym class, looking at forces and energy, muscles, balance, and more; and provides instructions for testing some of these concepts.

A simple introduction to the space shuttle, describing its equipment, parts, uses, and journey into space.

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

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