Circles in the Plane

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Geometry: Circles

Level

9-12

Activity Time

90 Minutes

Software

TI Connect™

TI Calculator

TI-84 series

Applications

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

Other Materials

This is Activity 6 from the EXPLORATIONS Book:
Exploring Mathematics with Cabri™ Jr. Application

Resource Types

Lessons

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Circles in the Plane

Activity Overview

In this activity, students will use the Cabri™ Jr. application to explore circles in a plane. They will investigate the relationship between the equation of a circle, the length of its radius, and the coordinates of its center.

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 cables

See the attached PDF file for detailed instructions for this activity

Print pages 65 - 71 from the attached PDF file for your class

During the Activity

Distribute the pages to your class.

Follow the Activity procedures:

Show the coordinate axes and create a circle

Measure the radius of the circle, display the equation of the circle, and the coordinates of the center

Drag the circle, the center, and the radius point and observe the changes

Construct a point on the circle, and measure its distance to the center

Construct a point not on the circle, and measure its distance to the center

Examine the relationship between the coordinates of the center, the length of the radius, and the equation of the circle

After the Activity

Students will fill in the Data Collection and Analysis sheet.

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 Appendix A PDF Teacher Notes Appendix B PDF Teacher Notes PDF

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Geometry: Circles

Level

9-12

Activity Time

90 Minutes

Software

TI Connect™

TI Calculator

TI-84 series

Applications

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

Other Materials

This is Activity 6 from the EXPLORATIONS Book:
Exploring Mathematics with Cabri™ Jr. Application

Resource Types

Lessons

Report an Issue

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Circles in the Plane

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

Circles in the Plane

Before the Activity Files

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

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