Education Technology

# Activities

• ##### Subject Area

• Math: Algebra I: Linear Functions
• Math: Middle Grades Math: Algebraic Thinking

6-8

50 Minutes

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

TI Connect™

• ##### Accessories

Sensor - Motion Detector
TI Connectivity Cable

• ##### Other Materials
This is Activity 11 from the EXPLORATIONS Book:
Graphing Calculator Activities for Enriching Middle School Mathematics

## A Move in the Right Direction

#### Activity Overview

Students physically provide motion data that is collected by a CBL™ and then graph the data. They determine if they "moved in the right directions" by comparing their graph with those printed in the activity.

#### Before the Activity

• Connect the motion sensor to the CBL 2through the SONIC port
• Connect the CBL to the calculator using the unit-to-unit link cable
• See the attached PDF file for detailed instructions for this activity
• Print pages 113 - 122 from the attached PDF file for your class
• #### During the Activity

Distribute the pages to the class.

• Examine the provided distance versus time graph
• Calculate the slope
• Understand that the slope is actually the speed of the walker
• Walk in front of the motion sensor at the pace determined from the graph
• Observe the distance-time graph on the calculator
• Compare the graph generated with the graph provided
• Check whether the two graphs are similar

• Repeat the activity with different graphs
• Use the information on the graph to develop a walking strategy and record it
• Start collecting data and compare calculator graphs with the ones provided
• #### After the Activity

Students complete the Questions sheet.

Review student results:

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