Education Technology

# Activities

• ##### Subject Area

• Math: Algebra II: Rational Expressions

9-12

45 Minutes

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

## Airport Impact Study

#### Activity Overview

Students perform a simulation to measure the sound intensity at different distances from the source of a noise, and then use the data to develop an inverse variation model.

#### Key Steps

• Students will investigate inverse variation. They will enter data of sound readings at various distances from a noise source given on the worksheet into lists L1 and L2. They will use this data to develop a model of intensity and map safe and unsafe zones.

• Students will calculate the square of the distance and intensity multiplied by the square of the distance. This will show students the constant of variation.

• Students will graph the data collected as a scatter plot and use the constant of variation to graph a function that models the data. This function will help them determine and graph the zones on their worksheet.