Perpendicular Bisector of a Line Segment

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Geometry: Points, Lines and Angles

Level

9-12

Activity Time

20 Minutes

Software

TI Connect™

TI Calculator

TI-84 series

Applications

Cabri™ Jr. for TI-83 Plus and TI-84 Plus

Resource Types

Lessons

Report an Issue

Perpendicular Bisector of a Line Segment

Activity Overview

Students learn to draw a segment and its perpendicular bisector. They understand right angles and congruent segments. Students observe that changing the length or orientation of the segment changes 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

Set up the TI-Navigator™ system

See the attached PDF file for detailed instructions for this activity

Print page 6 from the attached PDF file for your class

During the Activity

Distribute the page to your class.

Follow the Activity procedures:

Draw a line and its perpendicular bisector

Measure the two halves of the segment

Measure an angle formed

Change the length and position of the segment

Observe that the measurement of the segment changes but the angle measure remains 90?

TI-Navigator activity:

Use Screen Capture to observe and assess individual progress in drawing and exploring line bisectors

After the Activity

Review student results:

As a class, discuss questions that appeared to be more challenging

Re-teach concepts as necessary

Download Files

Download All Files (ZIP)

Before the Activity Files

Teacher Notes PDF

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Geometry: Points, Lines and Angles

Level

9-12

Activity Time

20 Minutes

Software

TI Connect™

TI Calculator

TI-84 series

Applications

Cabri™ Jr. for TI-83 Plus and TI-84 Plus

Resource Types

Lessons

Report an Issue

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Perpendicular Bisector of a Line Segment

Cabri™ Jr. for TI-83 Plus and TI-84 Plus

Perpendicular Bisector of a Line Segment

Before the Activity Files

Cabri™ Jr. for TI-83 Plus and TI-84 Plus

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