An introduction to comets discusses how they are formed, what they are made of, where most of them are found, and why they can sometimes be seen as bright streaks in the sky.

A basic introduction to minerals covers what they are, where they form, their crystal shapes, and the different types.

Describes what grizzly bears look like, where they live, and what they eat, with large color photographs, more facts, and glossary terms.

Provides information about coyotes, what they eat, their preferred habitats, and other facts. --

Presents general information about rocks, covering igneous, sedimentary, and metamorphic rocks, as well as some of the ways that people use them.

A basic introduction to ores covers what they are, how they are formed, the different types, and how they are used by people.

Introduces airplanes, discussing their different parts, passengers, and uses.

La abuela de Mia viene a vivir con Mia y sus padres. Cuando Mia eomparte con ella su cuento favorito a la hora de dormir, descubre que la abuela no entiende inglés. Mia la ayuda con el inglés y a la vez ella aprende algunas palabras en español. Pero la abuela no conoce suficientes palabras en inglés para compartir las historias de familia con su nieta. Un dia, Mia ve un loro en una tienda de mascotas y descubre la manera de ayudar a su abuela....

Visit a hospital.

An introduction to the Milky Way discusses how the galaxy was formed billions of years ago, its shape, its size, and everything that is a part of it.