After demonstrating how to find arc length and sector area using radian measures, student can practice the concepts with the examples provided and play an interactive game involving angular velocity.

The China Internet Information Center offers a short article which describes the efforts of the Chinese government to make improvements in the area of "Quality Control," in the manufacturing sector.

A map of the United States showing the results of the House vote on the Tariff Bill of 1828 during the presidency of John Quincy Adams. The map is keyed to show the areas of votes for, against, or non-votes on the bill, and the for or...

This site provides practice problems for calculating central angles and calculating arc length.

This site provides definitions for different parts of a circle, pictures to more clearly represent formulas involving circles. Some of the formulas discussed include: area of a circle, area of a sector of a cirles, circumference, length...

This site provides definitions for different parts of a circle, pictures to more clearly represent formulas involving circles. Some of the formulas discussed include: area of a circle, area of a sector of a cirles, circumference, length...

"Northeast China - the provinces of Heilungkiang, Kirin, and Liaoning - is the most important region of the country and a nationally significant and still-developing center of agricultural production. Most of the Northeast remained...