Education Technology

# Activities

• ##### Subject Area

• Math: Geometry: Quadrilaterals and Polygons
• Math: Geometry: Surface Area and Volume

9-12

50 Minutes

• ##### Device
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition
• TI-Navigator™
• ##### Software

LearningCheck™ Creator
TI Connect™

• ##### Accessories

TI Connectivity Cable

• ##### Other Materials
TI-Navigator™ Classroom Learning System (optional)

For more information on the Pearson Prentice Hall mathematics series visit them on the web at www.phschool.com

## Pearson Prentice Hall Geometry: Areas of Parallelograms and Triangles

#### Activity Overview

Lesson 7-1: Areas of Parallelograms and Triangles is from Chapter 7: Area. Areas of a Triangle from the TI-83/84 Plus Activities book accompanies this lesson.
Students will find the area of a parallelogram and the area of a triangle.

#### Before the Activity

Review the lesson PDF files.
Make copies of the lesson PDF files for your class.
Using LearningCheck™ Creator review the LearningCheck EDC files prior to class. They include the Diagnosing Readiness,Check Skills You'll Need, and Check Understanding questions from the lesson.
Make sure LearningCheck and Cabri® Jr. are on all student calculators.
Transfer the LearningCheck EDC files to student calculators using one of these methods:

• TI Connect™, a connectivity cable and unit-to-unit cables
• TI-Navigator™ "send to class" feature

• Transfer the Cabri Jr. files to student calculators using TI-Connect or the TI-Navigator System

#### During the Activity

Students will:

• Find the area of a parallelogram
• Find the area of a triangle
• Explore the relationship between the base and height of the area of a triangle

• Directions:
• Distribute the student activity sheets
• Follow the procedures as outlined
• #### After the Activity

As a class, review student answers, discussing questions that appeared to be more challenging, and re-teaching as needed.