Silverman, Buffy

Describes simple machines such as an inclined plane, wedge, screw, lever, pulley, and wheel and carefully explains the purpose of each machine and how to use it.

Provides information on what gravity is and how it works.

Simple text and photographs introduce the concepts of light and shadow.

Examines the ingredients found in pepperoni pizza and explores where they come from and how they are processed.

Presents a children's study of molds and fungi, the varieties of fungi including puffballs, earthstars, bracket fungi, truffles, and morels, as well as information on plant diseases and uses in medicine.

Examines how children inherit certain genes and traits from their parents; and discusses DNA, inherited and learned traits, and dominant and recessive genes.

An overview of grassland food chains featuring color photos and illustrations. Discusses the producers, consumers, and decomposers in these habitats. Describes what people do that harms grassland food chains and recommends actions for individuals to help protect them.

Explains how these animals look very similar, but are different, including how to become an expert on telling them apart.

Provides information on the sources and characteristics of sound.

Simple text and photographs describe how space vehicles work.