Mattern, Joanne

Simple text and photographs provide an introduction to wheels and axles.

Simple text and photographs provide an introduction to wedges.

Simple text and photographs provide an introduction to screws.

Simple text and photographs provide an introduction to pulleys.

Simple text and photographs provide an introduction to levers.

Simple text and photographs provide an introduction to inclined planes.

From creatures of the deep to creatures of the sky, disgusting animals can be found everywhere! In this title, readers will get a close-up look at all sorts of disgusting animals through vivid images, infographics, sidebars, and more.

Is the cheese moving? It is! It?s alive! In this title, readers will get a close-up look at all sorts of disgusting foods through vivid images, infographics, sidebars, and more.

Contains thousands of facts on a variety of subjects, such as science, nature, and people.

"An overview of Philadelphia, touching on the city's geography, history, economy, and the people who live there"--Provided by publisher.