Most of what goes on in the universe—from exploding stars and biological growth to the operation of machines and the motion of people—involves energy being transformed from one form into other forms.

The Electric and Magnetic Forces Interactive E-book* uses everyday events and items, like lightning, flashlights, batteries, compasses, and maglev trains, to examine electricity and magnetism. It provides detailed explanations of key science concepts, plus self-directed, embedded assessment to allow readers to check their learning. Teaching strategies will help teachers better understand student preconceptions and inquiry learning. The book's appealing multimedia and interactive simulations can also be used in the classroom.

Earth is a system that exists in dynamic equilibrium. The Earth of today does not look the same as it did millions of years ago. Even the Earth thousands of years ago has distinct differences from the Earth we know today. The Earth’s Changing Surface Interactive E-book* explores how Earth’s ever-changing surface is due to continuous natural processes such as tectonic activity, earthquakes, volcanic activities, weathering and erosion, and sedimentation and the reformation of rock.

The Earth, Sun, and Moon Interactive E-book* uses diagrams, illustrative visual aids, and multimedia to help teachers, students, and other readers understand the interplay between Earth, Sun and Moon, and the characteristics that make Earth unique. It focuses on topics related to the heating of Earth's surface by the Sun, the phases of the Moon, and the apparent changes in the position of objects in the night sky.

The Coral Reef Ecosystems Interactive E-book* explores the structure and inhabitants of a living reef. From the anatomy and reproduction of corals, to their interdependence on other inhabitants of the reef, to the impact of disasters on a reef ecosystem, this Enhanced E-book discusses what a coral reef ecosystem needs to survive and thrive and why coral reef ecosystems are important to our ocean.

The Chemical Reactions Interactive E-book* describes the abundance of chemical reactions in our environment and the variety of reactions involved in biological, chemical, and physical phenomena and how it relates to the electron configurations of and bonding between atoms. This e-book provides an in-depth view of chemical reactions in our everyday world and explains what causes them to occur.

All organisms—from single-celled bacteria to multicellular animals—need to obtain and use energy. The Cells and Chemical Reactions Interactive E-book* takes a closer look at the process of metabolism in cells, including photosynthesis in plant cells and cellular respiration in plant and animal cells. Additionally, this e-book looks at how the rates of these reactions can be affected by temperature, pH, hydration levels, and enzymes.

Cells carry on the many functions needed to sustain life, including cell growth and development. The genetic information encoded in DNA molecules provides instructions for assembling protein molecules, which are both necessary for producing more cells and performing other cellular functions. The Cell Division and Differentiation Interactive E-book* explores these cellular processes for growth and development, including the selective expression of specific genes, which allow for the differentiation and specialization of cells.

The Cell Structure and Function Interactive E-book* explores how cells, the basic building blocks of all organisms, function as systems of organelles and associated structures in a dynamic equilibrium between their internal and external environments. The focus is on topics related to the structure of various types of cells, the molecular workings inside the cell, and the role of proteins as the main structural and functional molecules.

By asking questions, conducting investigations, and interpreting results, scientists now have a better understanding of what makes up the smallest unit of matter that has properties of an element. The Atomic Structure Interactive E-book* uses investigative evidence to examine the structure of atoms and the parts that make up atoms. Additionally, this e-book looks at the forces that hold an atom and an atom’s nucleus together, isotopes, radioactivity, nuclear fusion and fission, and the energy contained in atoms.