Allen, Nancy Kelly

Discusses the ongoing changing of rocks known as rock cycles and how different types of rocks are formed.

Slate is just one of the many interesting kinds of metamorphic rock. This book teaches young readers how metamorphic rock forms, introduces several kinds of metamorphic rock, and explains why metamorphic rock is so important.

Rock identification is an interesting, fun, and hands-on earth science topic. Curious kids will be fascinated by a wealth of detailed information about this subject.

Minerals and rocks are an interesting and important element of earth science. Curious kids will be fascinated by a wealth of information about this topic.

Granite is just one of the many interesting kinds of igneous rock. This book teaches young readers how igneous rock forms, introduces several kinds of igneous rock, and explains why igneous rock is so important.

Contains picture riddles and facts about the different products animals make, and includes a glossary, and resources for further study.

Explains the election process from beginning to end.

Explains how two sisters teaching school came up with one of the world's most recognizable and beloved songs.

Farmer Worth discovers that a special tree on his farm produces different kinds of money, depending on which animal fertilizer he uses.

Presents a children's book that examines the kinds of food that animals eat such as nuts for squirrels, ants for an anteater, nectar from a flower for a hummingbird, and bamboo for a giant panda.