Activity Overview
In this activity, students use the drawing and measurement tools of Cabri™ Jr., to learn and understand the concept of "equidistant from the endpoints of a segment." They observe the changes if they move a point on the perpendicular bisector. 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
See the attached PDF file for detailed instructions for this activity
Print pages 13-14 from the attached PDF file for your class
During the Activity
Distribute the pages to your class.
Follow the Activity procedures:
Draw a line segment
Draw the perpendicular bisector to the drawn line
Investigate the distance between a point on the perpendicular bisector and endpoints of the segment
After the Activity
Review student results:
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary