The Math Forum offers an archive of question and answer sessions on circles and how they relate to geometry.

This interactive demonstration shows firstly how pi relates to the circumference of a circle. This is achieved using a regular polygon approximation, the closed polygon is opened to reveal this magical number. The area of a circle is...

Contains a question pertaining to finding the area of a circle.

Although this is a travel site, the information and detail it contains about Fort Ancient is very scholarly. Included are short videos about the area, and several maps.

This CoolMath resource provides an introduction to some Precalculus formulas.

This is a site for students and teachers of all grade levels. If you are looking for math tables, general information about math topics, or you would like to ask a question, this is the site to visit.

Migration from country to city forms a part of this, a detailed outline describing key points of international migration during the 1800s including the causes of, the reaction, and consequences.