Education Technology

# Activities

• ##### Subject Area

• Math: Geometry: Vectors

9-12

60 Minutes

• ##### Device
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition

TI Connect™

• ##### Accessories

TI Connectivity Cable

• ##### Other Materials
This is Activity 8 from the EXPLORATIONS Book:
Exploring Mathematics with the CellSheet™ Application

## Visualizing Vectors

#### Activity Overview

In this activity, students use the CellSheet™ Application to graph vectors. They also learn to find the sum of two vectors.

#### Before the Activity

• Install the CellSheet on the calculator using the TI Connect™, TI-Connectivity cable, and Unit to Unit cables
• See the attached PDF file for detailed instructions for this activity
• Print pages 75 - 84 from the attached PDF file for your class
• #### During the Activity

Distribute the pages to your class.

• Open the CellSheet Application on the calculator and start a new spreadsheet
• Convert the polar coordinates of the two vectors to the x and y vector coordinates
• Graph the vectors
• Write the two vectors in their rectangular form in terms of x and y
• Add the two ordered pairs to obtain the sum
• Graph the resultant vector
• Connect the end points of the vectors and the resultant
• Observe the resultant vector is the diagonal of the parallelogram having sides defined by the magnitude and direction of the 2 vectors
• #### After the Activity

Students will complete the worksheet and answer questions.

Review student results:

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