Education Technology

Drawing and Measuring an Angle

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