Education Technology

Triangle Congruency by SSS and Properties of Isosceles Triangles

Activity Overview

The goal of this activity is to deepen students' understanding of the properties of isosceles triangles, deductive reasoning, and coordinate geometry.

At the end of a 90 minutes class, students should be able to:

  1. Calculate the midpoint, distance, perimeter, area, and slope by using the TI-Nspire calculator;
  2. Solve real world problems by applying their understanding of isosceles triangles, coordinate geometry, and deductive reasoning;
  3. Complete the group activity collaboratively.

Before the Activity

Load Isosceles2.tns file onto all the students' handhelds. The activity consists of a problem designed to be teacher directed with time for students to investigate and record their observations.

During the Activity

See directions in the attached teacher document.