Presents information on simple machines with a focus on wheels and axles. Explains what wheels and axles are, how wheels and axles work, and includes examples of uses.
A basic introduction to flying cars, focusing on the history of flying cars, the different kinds of flying cars, the important parts of a flying car, and the safety rules designers must follow.
"Relevant images match informative text in this introduction to wheels and axles. Intended for students in kindergarten through third grade"--Provided by publisher.
An exploration of wheels and axles, covering how they are used, their design, how they work, and more. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.
"Rolling Along explores the benefits and uses of the wheel and axle. RobbO and RobbEE build a cart to make it easier to move a heavy load, and learn how the wheel and axle are also used for lifting and turning."--Provided by publisher.
