In this video profile produced for Teachers' Domain, meet teacher Dustin Madden, an Inupiaq who hopes to inspire students to take an active role in protecting the natural environment by giving them a foundation in math and science.

This applet allows users to study the nature of triangles and their area. It draws random triangles on a Cartesian coordinate system. The user can determine the area of the triangle using his or her preferred method. After the calculated...