Explore the mathematical symmetries of quilts in this featured activity and check out our activities database for other interesting ideas for your math circle to try.

The concept of math circle came into being in the erstwhile USSR and Bulgaria, around 1907, with the very successful mission to "discover future mathematicians and scientists and to train them from the …

A circle is a 2-dimensional closed shape that has a curved side whose ends meet to form a round shape. Learn about circles with concepts, properties, and examples.

Circle worksheets, videos, tutorials and formulas involving arcs, chords, area, angles, secants and more.

A circle is easy to make: Draw a curve that is radius away from a central point. And so: All points are the same distance from the center.

Math circles are a growing phenomenon in math education around North America. Inspired by Eastern European teaching models, math circles often take a problem-discussion approach to teaching and …

Test your understanding of Circles with these 12 questions. Explore, prove, and apply important properties of circles that have to do with things like arc length, radians, inscribed angles, and tangents.

Here you will learn about the different parts of a circle including how to identify the key parts of a circle, properties of circles, circle formulas such as circumference and area, and how to solve various circle …

They originated in Hungary over a century ago and quickly spread throughout Eastern Europe and Asia. These circles have played a crucial role in nurturing many great scientists in mathematics and other …

The Geometry of Circles - Cool Math has free online cool math lessons, cool math games and fun math activities. Really clear math lessons (pre-algebra, algebra, precalculus), cool math games, online …