Challen, Paul C

A photographic introduction to tennis, looking at tennis equipment, describing various techniques, explaining the rules of the game, and discussing tennis competitions.

Examines issues related to migration in the early twenty-first century, especially how globalization and climate change influence large-scale human migrations.

Discusses the role of a defensive back on a football team, covering stance, timing, footwork, tackling, and more.

Discusses the role of a receiver on a football team, covering stance, passes, routes, and more.

Discusses the role of a running back on a football team, covering stance, handing off, pass routes, blocking, and more.

Discusses the role of a linebacker on a football team, covering stance, footwork, beating blocks, and more.

Discusses the use and basis of the metric system to illustrate measurement of length, temperature, and weight, and compares the metric system to the imperial system of weights and measures.

An explanation of addition for students in kindergarten through third grade, covering zero problems, doubles, plus one, and other topics.

Examines the types of activities that fall under the category of gymnastics and outlines the techniques gymnasts use to perform a variety of movements. Features full-color photographs throughout.

Discusses the role of a quarterback on a football team, covering stance, running, passing, handing off, and more.