# Activities

• • • ##### Subject Area

• Math: Algebra II: Parametric Functions
• Math: Precalculus: Parametric Equations

• ##### Author 9-12

60 Minutes

• ##### Device
• TI-89 / TI-89 Titanium
• TI-92 Plus / Voyage™ 200

TI Connect™

• ##### Accessories

TI Connectivity Cable

## Dynamic Algebra

#### Activity Overview

This Computer Algebra System (CAS) activity shows how the method of dynamization by parameterization works with almost all classical math problems, which produces problems for CAS calculators quickly.

#### 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 - 7 from the attached PDF file for the class
• #### During the Activity

Distribute the pages to the class.

• Solve a classical fractional equation problem
• Find the area of a triangle with given vertices using Heron's formula
• Take a geometric or an algebraic approach to solve a vector equation problem
• Understand the concept of a transversal, and use it to solve problems
• Given two points on a line, find a point on the line which satisfies the Apollonius sphere condition
• Determine the center and radius of a circle given 3 peripheral points
• Examine the dynamization of the classical problems
• #### 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