Education Technology

# Activities

• ##### Subject Area

• Math: Precalculus: Other Topics: Matrices, Sequences, and Series

9-12

45 Minutes

• ##### Device
• TI-Nspire™ CX/CX II
• TI-Nspire™ CX CAS/CX II CAS
• TI-Nspire™ Navigator™
• TI-Nspire™
• TI-Nspire™ CAS
• ##### Software

TI-Nspire™
TI-Nspire™ CAS

3.0

## Roots and Cobwebs

#### Activity Overview

This lesson involves finding roots to equations using a method similar to those used by many calculators.

#### Objectives

• Students will find roots to equations using the recursive algorithm Fixed Point Iteration (FPI) and will visualize the algorithm as a cobweb plot.

#### Vocabulary

• recursive sequence
• convergent sequence
• Fixed Point Iteration
• cobweb plot

This lesson involves finding roots to equations using a method similar to those used by many calculators.
As a result, students will:

• Find roots using a recursive sequence - Fixed Point Iteration.
• Visualize this root-finding recursive sequence as a cobweb plot.