Describes the history, design and construction, and components of inventions that changed the world, including the steam engine, automobile, tank, telephone, computer, and many others.
Looks at the extraordinary advances that have been made in medicine since the start of the twentieth century, and how these changes have affected the lives of millions.
Asks a series of questions about sound and helps students use scientific processes to find answers to those questions. Discusses how people, animals, machines, and musical instruments use vibrations to make sounds.
Examines the different ways we can heat materials and how heat can change materials. Discusses the boiling and melting points of different materials, how we can increase the temperature of materials, and how heating can change a material's properties forever.
Uses simple texts and photographs to explain for young readers the different ways various materials can be cooled. Includes fact-boxes and investigative exercises for hands-on experiments.
