Steel is a man-made alloy or a mixture of metals. Lesson 18 in this series of 36 focuses on metals and their extraction from Earth. Individuals read about, discuss, and answer questions after learning how people find most metals, the...

Put together an English language arts unit on the six traits of writing with this helpful collection of resources. From fun songs to differentiated writing exercises reinforcing each of the traits, great ideas are provided for...

In this music worksheet, students learn about the sonata form of music composition. Students read about the 3 main sections of the sonata form: exposition, development and recapitulation followed by a coda. There are no questions on the...

Survey potential bridge sites, research bridge design, and select the right bridge for the right location in this interactive activity from the NOVA: "Super Bridge" Web site.

This interactive activity, from the Web site developed for the PBS series "Building Big," use your knowledge of bridge design to match the right bridge location in a fictitious city.

NBI National Bridge Inventory Database search form from Nationalbridges.com allows one to enter the information related to a specific rail line in order to acquire related bridge information.

Read about the building of the Brooklyn Bridge, the first steel-wire suspension bridge. This site, from American Memory, has a biography of John A. Roebling, the designer of the bridge, and many links to photographs of the construction...

Site defines four main factors (span, material, placement of the travel surface in relation to structure, and form) that should be considered when designing a bridge.

Clickable network map shows information on the types and uses of networking hardware. Very basic introduction.