The program demonstrates the following constructions in the context of a student creating a mobile to hang above a baby's cot: * Bisecting an angle * Perpendicular bisector of a line * Constructing a triangle using three known side lengths * Determine the center of gravity by constructing medians * Determine the inscribed circle of a triangle by constructing the angle bisectors * Determine the

Grade Level:

Elementary

Middle

Length:

00:30

This program provides students with a lively introduction to key concepts involved with angles, such as how we define and write information about an angle, mathematical notation for rays, line segments and lines, and how to use a protractor.

Grade Level:

Middle

High

Length:

00:23