Simple experiments demonstrate the different forces that cause different kinds of weather.

Simple experiments demonstrate the laws of gravity.

Explains the principles of color and gives instructions for a variety of simple experiments.

Simple experiments demonstrate basic principles of air and flight.

Part one describes the orchestra, the roles of the conductor and composer, and its musical instruments, as well as how the instruments work, how they are played, and what sounds they make. Part two gives a history of classical music from the earliest times to today, including timelines, an A-Z of classical composers, a section on musical forms and a glossary.

Simple experiments explain plant growth.

Text and numerous detailed illustrations introduce and explain the scientific principles and workings of hundreds of machines. Includes new material about digital technology.