Explains how children can help when someone is choking, has cut him- or herself, has broken a bone, or needs other types of first aid, and describes the components of a first aid kit.
Explains to children why good hygiene, sleep, and nutrition habits are crucial to a healthy life. Also includes "fun facts," a glossary, and a further reading list.
Discusses the history of computers beginning with the early nineteenth-century punch-card machines, the first electronic computers in the early 1900s, and the first home computers in the 1970s.
Simple text and photographs examine how doctors and nurses use science to treat patients, discussing vaccinations, medicine, machines that enable technicians to look into a person's body, and surgery.
