Learn how to identify key parts of a circle and the terminology associated with them.
Learn where the equation for the circumference of a circle comes from and how to use it.
Learn where the equation for area of a circle comes from and how to use it.
Learn how to use one piece of information about a circle (radius, diameter, circumference or area) to find the remaining pieces of information.
Learn why pi is a constant value and why we use 3.14 as a common estimate for it.