Education Technology

# Activities

• ##### Subject Area

• Math: Algebra I: Linear Functions

9-12

60 Minutes

• ##### Device
• TI-73 Explorer™
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition

TI Connect™

• ##### Accessories

TI Connectivity Cable

• ##### Other Materials
This is Activity 11 from the EXPLORATIONS Book:
Topics In Algebra 1.

## Linear Inequalities: Using Algebra

#### Activity Overview

Students learn to solve inequalities using one and two steps. They review the properties of inequalities.

#### Before the Activity

Install Topics in Algebra 1 (Chapters 1-4) App on the calculator using one of these two methods:

• TI Connect™, a TI Connectivity Cable, and the Unit-to-Unit Link Cable
• TI-Navigator™  "send to class" feature
• See the attached PDF file for detailed instructions for this activity
• Print pages 4-11 to 4-16 from the attached PDF file for your class
• #### During the Activity

Distribute the pages to the class.

• Solve the inequality algebraically and draw its number line graph
• Look at the algebraic expression displayed in the activity Solve It! and decide what must be done to solve for x
• In the activity Free Fall, observe the inequality and quickly solve for x
• Solve additional problems involving inequalities
• Use the calculator to store a variable, test an inequality and verify by graphing the solution
• #### After the Activity

Students will complete the Student Worksheet and analyze the results.

Review student results:

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