Helen Frost

Simple text and photographs from the rain forest present the characteristics and behavior of tree frogs.

Simple text and photographs present the features and behavior of lemurs.

Simple text and photographs present the features and behavior of chimpanzees.

Simple text and photographs present the sense of seeing and how it works.

An introduction to the physical characteristics and behavior of monarch butterflies.

A simple description of how to brush your teeth, from putting the toothpaste on the brush to swishing water in your mouth and spitting at the end.

Describes the nests of various types of birds and the materials used to build them, including the grass and twig nests of robins, the moss and spider web nests of hummingbirds, and the big stick nests of eagles.

Describes where and how various species of birds nest, including sites in tree branches, in hollow trees, near water, and on cliffs.

Simple text presents facts about the properties and behavior of water in the state of a gas.

An introduction to the physical characteristics, habits, and behavior of cicadas.