Experiments and activities introduce the basic principles of electricity and magnetism.

As Amy adjusts to life without her mother, she relies on her friend Ty, who shares with Amy the responsibility for maintaining Heartland, and when she's struck by another family crisis, it's to Ty that she turns for support.

Follows a drop of water as it cycles from droplet to vapor and back to water and describes its journeys in between.

Follows the sun from dawn to dusk to explain how light rays travel, how shadows are formed, how the moon lights up the night sky, and more.

When Amy returns to Heartland for her winter break, she finds that she must work with her former boyfriend, Ty, to help save a pregnant mare.

Photographs and text share real-life stories of how doctors use their quick thinking and special training to help people in emergency situations, describing different types of doctors and their training, and examining the tools and equipment used by doctors.