David Armentrout

Defines wedges, explains their functions, and suggests simple experiments to demonstrate how they work.

In this series, you'll explore six simple machines. Each book describes a different one and explains how it helps make our work easier. Experiments and activities give you the chance to work with each simple machine. You'll be surprised at how many you've been using all along! - Back cover.

Defines wheels, explains their functions, and suggests simple experiments to demonstrate how they work.

Provides simple definitions for fifty words related to astronomy and space exploration along with sample sentences using each word.

Focuses on the importance of basic training in the fundamentals of hockey and provides practice drills and training exercises to help young players achieve their goal of playing better hockey.

An introduction to hiking, covering such aspects as planning, clothing, supplies, food, safety, and the enjoyment of animal and plant life along the way.

Presents basic information about the game of hockey, with particular emphasis on its rules and regulations.