Douglas, Lloyd G

Illustrations and text describe different examples of the use of simple machines known as wedges.

Illustrations and text describe different examples of the use of simple machines known as screws.

Describes simple machines called planes or ramps and how they are used to make work easier.

A young girl explains the meaning of Independence Day and describes how she and her family celebrate the Fourth of July.

Illustrations and text describe different examples of the use of simple machines known as levers.

Presents a children's book for early readers that examines the many kinds of starfish that live in the ocean, and describes their various colors and sizes.

Presents an introduction to kelp, in simple text with illustrations, describing what it is, where it is found, and how it is harvested.

Presents an introduction to jellyfish, in simple text with illustrations, describing what they look like, where they live, how they move, and what they eat.

Presents an introduction to the humpback whale, in simple text with illustrations, describing its physical characteristics, life cycle, and habitat.