Education Technology

# Activities

• ##### Subject Area

• Math: Geometry: Surface Area and Volume

6-8

30 Minutes

• ##### Device
• TI-73 Explorer™

TI Connect™

• ##### Accessories

TI Connectivity Cable
Unit-to-Unit link cables

## Drawing 3-Dimensional Figures

#### Activity Overview

In this activity, students learn to draw a three-dimensional figure using Isometric Dots in the Explorer Draw App™ on the calculator. They also find the area and volume of a rectangular prism.

#### Before the Activity

• Install the Explorer Draw App application on the calculator using the TI Connect™ , TI Connectivity Cable, and Unit-to-Unit Link Cable

• Set up the calculator as explained in the activity
• See the attached PDF file for detailed instructions for this activity
• Print the pages from the attached PDF file for the class
• #### During the Activity

Distribute the pages to the class.

Follow the Activity procedures:

• Create an ISO file, and notice a grid of dots appears on the screen
• Use the Draw command to draw line segments connecting points on the grid
• Draw a rectangular prism with dimensions 2 units by 3 units by 3 units
• Find volume and surface area of the prism
• Answer questions at the end of the activity
• #### After the Activity

Review student results:

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