Education Technology

Drawing and Measuring an Angle

Published on 06/09/2008

Activity Overview

Students learn to use drawing and measurement tools to measure angles. They explore and review types of angles as their measurements are altered. NCTM Geometry Standard covered: Analyze characteristics and properties of 2- and 3-dimensional geometric shapes and develop mathematical arguments about geometric relationships.

Before the Activity

  • Install the Cabri Jr. App on the students' graphing calculators using TI Connect™, a TI Connectivity Cable, and the Unit-to-Unit Link Cable
  • Set up the TI-Navigator™  system
  • See the attached PDF file for detailed instructions for this activity
  • Print page 5 from the attached PDF file for your class
  • During the Activity

    Distribute the page to your class.

    Follow the Activity procedures:

  • Use the Segment tool and draw two segments to form an angle
  • Measure the angle
  • Alter the measure of the angle

  • TI-Navigator activity:
  • Use Quick Poll to review naming and measuring angles
  • After the Activity

    Review student results:

  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary