Ballard, Carol

An introduction to the brain that discusses what it is made of, its functions, memory, learning, and other related topics.

Experiments and activities help students learn how the human body stays fit, describing how the muscles, heart, sweat glands, and other systems work together to help people stay healthy.

Explores the structures and functions of different types of plants and their classification.

Explores the structures and functions of food webs.

Explores the structures and functions of cells.

Text and concise illustrations, photographs, and diagrams provide information about the human reproductive system. Includes fact boxes, investigations, and related activities.

Explains what soil is made of and describes its uses, such as drainage, farming, composting, and building.

Presents an introduction to the digestive system, explaining what it is, how it works, and its function in the human body; looks at some of the illnesses and injuries that can affect the digestive system; and offers advice on how to keep it healthy.

This book shows you what mixtures and solutions are made from. You will learn about different types of mixtures, how solutions can be made, and how different solvents can be used.

Explores technologies and strategies for sustainable living in the early twenty-first century, with a focus on farming, discussing environmental problems, globalization, meeting people's needs, and other related topics.