Simple, humorous text and comic illustrations explain the basics of the circulatory system--the systemic, pulmonary, and coronary circuits. Readers follow a red

A humorous but factual look at the human digestion process.

How does blood move around inside the human body? Students will learn all about the heart, blood cells, blood vessels, and other important parts of the circulat

With step-by-step directions, lessons, projects, cooperative learning activities and more, here are reproducible cut-and-paste patterns for assembling and under

Why does dust collect on the blades of a fan? Why should you wear support hose on a long airplane flight? Vogel ranges across physics, fluid mechanics, and chem