These heavy machines flatten the ground to make roads or prepare the foundation of a building. They roll large drums over a surface to smooth it out. Readers will learn the parts of a roller and what kinds of rollers are used for different projects.

Scrapers are big earth movers. They have a part that chops up the ground so that the ground can be scraped up and transported. See the whole process unfold in the pages of this introduction to scrapers.

"Introductory text and full-color images explore the physical characteristics of asteroids in space. Intended for students in kindergarten through third grade"--Provided by publisher.

"Introductory text and full-color images explore the physical characteristics and discovery of the planet Saturn. Intended for students in kindergarten through third grade"--Provided by publisher.

"Introductory text and full-color images explore the physical characteristics and discovery of Jupiter. Intended for students in kindergarten through third grade"--Provided by publisher.

The United States accelerated the space race in 1958 by forming NASA. Eager readers will learn about the history of NASA and its many manned and unmanned missions.

Initially developed to provide close air support for ground vehicles and troops, the A-10 has become an extremely valuable tool for the United States Air Force. Students will discover its history, technology, and role in the Air Force today.

Airplanes travel all around the world! In this title, beginning readers can learn about the parts of these mighty machines as well as the jobs they do through simple, predictable text and bright photos. Features such as a labeled diagram of airplane parts support and reinforce the text. This low-level title will help students just beginning to read independently to take flight!