Education Technology

# Activities

• ##### Subject Area

• Math: Calculus: Other Functions

9-12

60 Minutes

• ##### Device
• TI-89 / TI-89 Titanium

TI Connect™

• ##### Accessories

TI Connectivity Cable

## Calculus Tools TI-89 Flash Application How - to Guide

#### Activity Overview

This Computer Algebra System (CAS) activity encourages students to investigate the use of the calculator to graph a function, find the value of a tangent to the curve, and find area under the curve using right sum.

#### Before the Activity

• Install TI Connect™ using the TI connectivity cable
• See the attached PDF file for detailed instructions for this activity
• Print pages 1 - 4 from the attached PDF file for the class
• #### During the Activity

Distribute the page to the class.

• Activate the Calculus Tools flash application
• Open the Derivative menu and select Tangent Line
• Observe the dialog box with default values
• Observe the graph of the function and the tangent line, as well as the equation of the tangent line
• Open the Integral menu and select Right Sum
• Open the Right Sum dialog box and execute the program with default values
• Note the right hand rectangles drawn on the curve and compute the sum of their areas
• Experiment for different functions and for different values for Tangent Line and Right Sum
• #### After the Activity

Students' answer questions on the Activity sheet.

Review student results:

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