[Free Registration/Login Required] Two slideshows on Commedia Dell'Arte. Includes character cards, each with a picture of the character and a short description, and dramatic form cardss, also with pictures and explanations. The latter...

Collection of tables comparing the work of Pauling, Allred-Rochow, and Mulliken-Jaffe Scales. Taken from "Inorganic Chemistry" by Huheey, J.E.; Harper & Row: New York, 1983.

This history of the Qing Dynasty, including the reign of Emperor Xian Feng, is in timeline format and allows viewers to compare events within the dynasty to those worldwide.

This lesson will introduce abiotic and biotic factors, giving examples and comparing/contrasting the two. It is 2 of 4 in the series titled "Abiotic and Biotic Factors."

Observe fast and slow events that change the face of Earth's surface with this slideshow. Students will use evidence from videos and images to describe how changes on Earth's surface can happen quickly or slowly. Students will have the...

This lesson will introduce abiotic and biotic factors, giving examples and comparing/contrasting the two. It is 4 of 4 in the series titled "Abiotic and Biotic Factors."

An interactive Java applet game in which the reflection of light is compared to the path of a billiard ball. Users view images of a target ball and try to direct a cue ball in such a manner as to hit it.

A complete site from iKnow.net that compares the various phases of mitosis in plant and animal cells. Text is supplemented with pictures of each phase.

A round shield, three feet in diameter, carried by the celites in the Roman army. Though small, compared with the Clipeus, it was so strongly made as to be a very effectual protection. This was probably owing to the use of iron in its...

The patera was a broad and comparatively shallow bowl used for libations, and also for drinking out of at banquets. The following cut gives a front and side view of a bronze patera found at Pompeii. - Anthon, 1891