2 Mathematics acitivity / Maths Lab September 18, 2014 by Tuba Khan · Published September 18, 2014 · Last modified September 24, 2014 Property of Circles (A Teaching Aid) Material Required: Plywood or acrylic board cut in the form of a circle, pegs, rubber bands. This is a teaching aid which can be used to illustrate the angle properties of a circle. These...